Sony PS-3750 turntable

Direct-drive Turntable System

Features:

Direct drive system with BSL 9Brush and Slotless) DC servo-controlled motor

Electronically controlled speed selection for 33-1/3 and 45 rpm with pitch control

Buil-in stroboscope and engraved strobe markings on the platter rim

Precision machine finished aluminium alloy platter with resonance reducing undercoating

Newly designed record mat features air-damped record cushions

Highly sensitive statically balanced tonearm with plug-in universal headshell

Shock-mounted static balance counterweight with direct-reading stylus force gauge

Remote viscous-damped cueing

Rotatable armrest for easy tonearm balancing

Low capacitance phono cable and separate ground wire

Removable hinged plastic dust cover

Adjustable feet with rubber anti-feedback isolation

Complete with 45 rpm adapter, cartridge mounting screws and spacer

Specifications:

Turntable

Platter:  314 mm 912-3/8 inches) aluminum alloy diecast

Motor:  DC brushless motor

Drive System:  Direct drive

Speeds:  3-1/3 and 45 rpm

Pitch Control:  ±4%

Wow and Flutter:  less than0,03% WRMS

Signal-to-Noise Ratio:  better than 70 dB (DIN-B)

Tonearm

Type:  Statically balanced, universal

Pivot to Stylus Length:  216,5 mm 98-1/2 inches)

Overall Arm length:  300 mm 911-7/8 inches)

Overhang:  16,5 mm (21/32 inchees)

Tracking Error:  within +3°, -1°

Tracking Force Adjustment Range:  0- 3 g

Shell Weight:  7,5 g

Cartridge Weight Range:  4 - 13 g (without extra weight)

General

Power Requirements:  120 V, 60 Hz

Power Consumption: 10 W

Dimensions (W x H x D):  445 x 155 x 365 mm (17-5/8" x 6-1/8" x 14-3/8")

Weight (net):  9 kg ( 19 lb 13 oz) 

Sanyo TP-1005 turntable

PLL Servo Belt Drive Stereo Turntable

Features

Electronic speed control

s-shaped tonearm

Plug-in Headshell

Calibrated Counter weight for Stylus Force Adjustment

Adjustable Anti-skating

Viscous-damping Cueing

Shock-absorbent Feet

Specifications:

Motor:  DC motor

Drive System:  Belt drive

Speeds:  33-1/3 and 45 rpm

Wow and Flutter:  0,05% WRMS

Signal-to-Noise Ratio:  better than 60 dB

Turntable Platter:  292 mm (11-1/2" diameter

Tone Arm:  Static S-shaped balance type

Tracking Error:  ±1,5°

Stylus Pressure Force Range:  0 - 3 g

Cartridge:  magnetic steeo (MG-35D)

Stylus:  0,6 mil diamond stylus (ST-35D)

Stylus pressure:  1,5 - 2,5 g

Frequency Response :  20 - 20,000 Hz

Overhang:  15 mm

Channel Separation:  better than 20 dB

Power Source:  AC 100 - 120 V, AC 220 - 240 V; 50/60 Hz

Power Consumption:  6W

Dimensions (W x H x D):  440 x 140x 360 mm (17-3/8" x 5-1/2" x 14-1/4")

Weight:  4,1 kg (9 lbs)

Toshiba ST-335 MkII tuner

The Toshiba ST-335 MkII is an AM/FM stereo tuner featuring a stereo beacon, a three-position LED FM center channel tuning indicator, a five-step LED signal Strength/ AM tuning indicator, and a record calibration (Rec Cal) tone output for pre-adjustment of the input level to a tape recorder. The record calibration output is 6 dB below (-6 dB) the output level from a 100% modulated FM transmitter. The FM center channel tuning "meter" consists of a two yellow LED s flanking a gree LED; optimum tuning is attained when only the green LED is lit. However, tuning is relatively broad in the 'green range", and distortion and separation values might vary from our measurements. The output is provided by two "patch cords" with phono plugs, approx 1 meter in length.

The FM pilot leakthrough is relatively high and a recorder's MPX filter must be used when making recordings from FM stations. 

Specifications:

Sensitivity (IHF):  2,0 µV (11,2 dBf)

Selectivity:  60 dB

Capture Ratio:  1 dB

Image Rejection Ratio:  50 dB

Spurious Rejection:  70 dB

IF Rejection Ratio (98 MHz):  80 dB

Signal-to-Noise Ratio (IHF)

Mono :  73 dB

Stereo :  65 dB

T.H.D. (1 kHz)

Mono :  0,2%

Stereo :  0,4%

Stereo Separation (1 kHz):  40 dB

FM Frequency Response :  30 Hz - 15 kHz (-1 dB)

Output level:  500 mV

AM Suppresion Ratio:  45 dB

AM Sensitivity:  300 µV/m

Dimensions (W x H x D):  420 x 96 x 257 mm (16,5" x 3,8" x 10,1")

Weight:  3,4 kg (7,5 lbs)

Scott PS-18 turntable

Semi-Automatic Turntable

The Scott PS-18 is a belt-driven two-speeds semi-automatic record player complete with factory installed pickup. Overall performance and soun quality is about average for the price, though the system is sensitive to external shock and vibration. The motor starts when the tonearm is moved off its rest. At the end of play the tonearm recycles to the rest and the motor turns off. The tonearm has a micro-adjust counterweight that serves as an 0 - 4 gram VTF (vertical Tracking Force) adjustment calibrated in 0,5 gram increments. There is a calibrated anti-skate. The pickup rated for 1,5 to 3 grams VTF, is factory installed in a fixed headshell. The stylus overhang gauge is a reference mark on the shell which isn't sufficiently accurate for user-installed pickups. The tonearm rest has a positivie user-applied lock that prevents accidental displacement of the tonearm from its rest, which might result in stylus damage. The PS-18 we tested was from the first production run at the factory. Subsequent units are to be delivered with a universal headshell mount to give the user more flexibility in cartridge selection and easier installation.

Controls:

Speed select

Reject

Tonearm lift

Anti-skate

Vertical Tracking Force

Turntable Performance

Line Voltage Immunity:  Total (90 to 140 volts)

Wow and Flutter:  0,07% (average);  0,1% (peak)

Tracking Force Calibration :  accurate to 0,25 grams

Output Cable Capacitance:  150 pF

Pickup performance:

Frequency response Limits:  +5/-1 dB

Frequency Response:  20 to 20,000 Hz

Channel Balance:  1 dB

Stereo Separation:

At 1,000 Hz :  20 dB

At 15,000 Hz :  15 dB

Dimensons (W x H x D):  17,25" x 5,5" x 13,75"

Weight: 15 pounds

Crown FM 1 tuner

FM Stereo Tuner

An FM only stereo tuner with phase-locked loop digital tuning and LED metering readouts. All tuning functions are touch-controlled for no-moving-parts operation. The memory function allows the pre-setting of five favorite stations for instant recall. The scan search feature allows the listener to sweep up and down the dial, stopping either at every active station or only those broadcasting in stereo automatically. The variable muting control allows the user to set the tuner to receive only signals of sufficient strength to assure noise-free reception. All phases of operation are handled smoothly and facilitate the highest order of tuning accuracy and convenience. Ther is LED  metering for multipath and signal strength variable interstation muting control, selectable stereo de-emphasis and a multiplex filter.

Specifications

Tuning Range:  88,1 to 107,9 MHz

Antenna Inputs:  300 Ω balanced; 75 Ω unbalanced

Intermadiate Frequency:  10,7 MHz

Sensitivity:  10,8 dBf (IHF usabla)

Quieting:  0,6 mV (75 Ω) for 30 dB mono quieting;  36 dBf for 50 dB stereo quieting; 10,8 dBf for 50 dB mono quieting

Signal-to-Noise Ratio:

Mono :  70 dB below 100% modulation at 65 dBf reference level

Stereo :  65 dB below standard stereo modulation at 65 dBf reference level

Hum and Noise:  65 dB below 100% modulation at 65  dBf reference level. Minimum volume hum and noise is 90 dB below reference

Total Harmonic Distortion:  at 1000 Hz 65 dBf 100% modulation

Mono :  0,1%

Stereo :  0,09%

Capture Ratio:  2 dB at 65 dBf

Alternate Chanel Selectivitty:  75 dB at 25 dBf

Frequency Response:  30 Hz to 15 kHz ±0,5 dB

Stereo Separation:  45 dB at 1 kHz; 35 dB aat 10 kHz

Image Response Ratio:  better than 114 dB

Spurious Response Ratio:  better than 114 dB

IF Response Ratio:  better than 114 dB both balanced and unbalanced

RF Intermodulation:  65 dB

AM Suppression Ratio:  better than 73 dB at 25 dBf

Subcarrier producct Ratio:  65 dB

SCA Rejection Ratio:  72 dB

Connectors: 

300 Ω Balanced Antenna Input - push button quicj connect

75 Ω Unbalanced Input - F type

Composite - PIN jack

Multipath - PIN jack

Left Channel variable and fixed output - PIN Jack

Right Channel variable and fixed output - PIN Jack

Display:  7 segment red LED Frequency readout

Red LED Stereo indicator

20 LED Analog dial green dot display

10 LED Signal Strength green bar display

10 LED Multipath amber bar display

Power Requirements:  120 V or 100, 200, 220, 240 V AC , 50/60 Hz

Power Consumption:  10 watts

Dimensions (W x H x D):  483 x 133 x 381 mm (19" x 5-1/4" x 15")

Weight:  7 kg (15,5 pounds)

Denon DP-30L turntable

Servo controlled Direct-drive Auto-lift turntable

The Denon DP-30L is an electronically controlled direct drive two speed record player complete with integral base and dust cover. The pickup is provided by the user.

Overall performance is exceptionally good; high performance pickups seem to deliver a "little bit extra", and resistance to external shock and vibration is unusually high, even at low tracking forces. No stylus overhang gauge is provided; the user must make the adjustment using a ruler, which can lead to stylus damage. There is really no good reason why a record player of this quality and price is not provided with an overhang gauge, which costs a few pennies, at most.

There are controls for main power, 33/start, 45/start, speed adjust (pitch) and stop. 33 and 45 full time illuminated strobes are provided. The tonearm is manually positioned on the record. At the end of play an optical sensor causes the tonearm to lift and motor to stop. Alternately, pressing stop during play will cause the tonearm to lift and the motor to stop. Pressing a speed selector control restarts the motor and lowers the tonearm. The tonearm has a micro-adjust counterweight that also serves as an 0-3 gram VTF calibrated in 0,1 gram increments. There is a calibrated antiskate. The pickuup mounts in a universal headshell.

Features:

Auto-lift mechanism with non-contact record-end sensor

Newly developed auto arm lifter functions with smoothness and stability

Trim and slim profile with up-front control arrangement

Detects speed with exclusive magnetic recording system

Achieving outstanding anti-howling characteristics through a cabinet made of new compound

Remarkably low (-75 dB) DIN-B rumble -Quiet smooth running AC motor

Specifications

Drive System:  Dirct-drive

Motor:  AC servomotor

Speed:  33-1/3 and 45 rpm

Variable Speed Adjustment Range:  over ±3%

Wow and Flutter:  less than 0,018% WRMS

Signal-to-Noise Ratio:  better than 75 dB (DIN-B)

Starting Time:  less than 1,5 sec to reach 33-1/3 rpm nominal speed

Speed Control System:  Servo controled by frequency detection

Turntable Platter:  Diecast aluminium 300 mm diam.

Weight:  1,5 kg

Moment of Inertia:  190 kg-cm² (including turntable mat)

Tonearm

Type: S-shape static balance with automatic arm lift

Effective length:  220 mm

Overhang:  16 mm

Tracking Error:  within 3°

Stylus Force Range:  0 - 2,5 g/rot (1 division is 0,1 g) direct reading

Acceptable Cartridge Weight:  5 - 10 g (with head shell provided)

Weight of Headshell:  8 g 9excluding screws, nuts and spacer)

Shell Connector: FIA standard 4P connector

Arm Lifter:  Servo controlled by angular control motor

General

Power Supply:  AC 120 V at 60 Hz, AC 200, 220, 240 V at 50 Hz

Power Consumption:  15 W

Dimensions (W x H x D):  450 x 140 x 403 mm ( dust cover closed)

Weight:  9,5 kg 

Denon PMA-630 amplifier

The Denon PMA-630 is a stereo integrated amplifier FTC rated for 8 ohms at 80 watts RMS per channel, 20 to 20,000 Hz  at less than 0,01% T.H.Dbetter than thouch a dual range (20 Hz and 40 Hz) subsonic filter and loudness compensation are provided, there are no conventional tone controls. Tone equalization, if desired can be provided through an optional accessory equal izer, such as a graphic-type equalizer, for which "break in" preamplifier-poweramplifier connections are provided on the rear. A shorting bar normally connects the preamp and amplifier. To use an accessory equalizer, the shorting bars are simply pulled out, thereby "breaking" the signal path for the equalizer. Other features include automatic dubbing from and to either of two recorders, a recorder output disconnect (labled Rec out) which is supposed to avoid some effect of the recorders on sound quality (thogh we could not measure non hear  any deleterious effect of the recorders on the speaker sound), and an output hold-off that prevents power supply turn-on transient from being fed to the speakers. The unit is in a metal cabinet. Three AC convenience outlets are provided.

Features:

Pre-amplifier equipped power amplifier that leads the cartridge output to the speaker by way of a simple signal route

Pure complementary circuits

Low distortion high stability DC power amplifier

High output, High gain equalizer amplifier

Power section that employs a powerful power transformer and large capacity condensers

Reduction of output impedance through the adoption of the relay driving system (damping factor: 80 upward)

Rec-out "Off" function

Specifications:

Main Amplifier Section

Type:  pure complementary push-pull system DC circuit

Rated Output (both channels driven)

From 20 Hz to 20 kHz :  80 W + 80 W RMS at each channel (T.H.D., 0,008% at 8 Ω)

At 1 kHz :  80 W + 80 W RMS at each channel (T.H.D., 0,01% AT 4 Ω)

Total Harmonic Distortion:  LES THAN 0,01%

Intermodulation Distortion:  less than 0,005% (at equivalent rated output)

Less than 0,005% (at 1 watt output)

Power bandwidth:  5 Hz to 100 kHz (IHF, T.H.D. 0,05%)

Transmission Characteristic:  DC to 100 kHz +0 -1 dB (at 1 watt output)

Input Sensitivity/Impedance:  320 mV (RMS)/100 k Ω

Output Impedance:  less than 0,09 Ω

Output Terminals Speaker:

A & B, 4 to 16 Ω load

A + B, 8 to 16 Ω load

Pre-amplifier Section

Max. Output:  25 V (at 50 k Ω , T.H.D. 0,01%)

Rated Output:  320 mV

Total Harmonic Distortion:  0,003% (at 10 V output)

Input Sensitivity/Impedance: 

Disc 1 and 2 :  2,5 mV/ 50 k Ω

Tuner ;  320 mV/ 30 k Ω

Aux, Tape :  320 mV/ 30 k Ω

Maximum Allowable Input

Disc 1 and 2 :  200 mV 1 kHz

RIAA Deviation:  less than ±0,2 dB (20 Hz - 20 kHz)

Signal-to-Noise ratio (IHF, A network)

Disc 1 and 2 ;  better than 86 dB (input terminal shorted)

Tuner, Tape, Aux :  better than 112 dB (input terminal shorted)

Filter Characteristic:

Subsonic :  20 Hz (6 dB/oct); 40 Hz (6 dB/oct)

Loudness Control Characteristic

Low Range:  100 Hz +9 dB

High Range:  10 kHz +5 dB

Power Source:  AC 120 V at 60 Hz or AC 220 V at 50 Hz

Power Consumption: 215 W ( at Ac 120 V) or 445 W (at AC 220 V)

AC outlet (USA and Canada)
Unswitched :  250 W max total

Switched ;  100 W max

Dimensions (W x H x D):  434 x 145 x 390 mm (17-5/64" x 5-45/64" x 15-23/64")

Weight:  16 kg (35,3 lbs)

Toshiba SR-B150 turntable

Semi Automatic Belt Drive Stereo Turntable

Features:

4-pole AC synchronous motor

Straight  tone aem with antiskating

Oil-damped cueing

Anti-resonance cabinet

Magnetic cartridge (SR-B152)

Specifications:

Type:  Belt-drive, Semi-automatic

Motor: 4-pole synchronous

Speeds:  33-1/3 and 45 rpm

Wow and Flutter:  0,07%

Signal-to-Noise Ratio:  60 dB

Plater diameter:  310 mm

Tone -arm:  Straight-type arm with carbon glass fibre

Tracking Error:  ±2°

Cartridge:  C-320 M Moving Magnet

Stylus:  0,6 mil diamond

Dimensions (W x H x D):  420 x 130 x 380 mm (16,6" x 5,1" x 14.9")

Weight:  4,1 kg (9,0 lbs)

Toshiba SR-A100 turntable

Semi Automatic Belt Drive Stereo Turntable

Features:

4-pole AC synchronous motor

High quality tone aem with antiskating

Oil-damped cueing

Full acoustic damping

Magnetic cartridge (SR-A102)

Specifications

Type:  Belt-drive, Semi-automatic

Motor: 4-pole synchronous

Speeds:  33-1/3 and 45 rpm

Wow and Flutter:  0,06%

Signal-to-Noise Ratio:  65 dB

Plater diameter:  310 mm

Tone -arm:  S-shape-type arm

Tracking Error:  ±2°

Cartridge:  C-44 Induced  Magnet

Stylus:  0,6 mil diamond

Dimensions (W x H x D):  422 x 130 x 359 mm (16,6" x 5,1" x 14.1")

Weight:  4,5 kg (9,9 lbs)

Sony PS-X555ES turntable

The linear tracking tonearm is a major technological achievement in turntable design that has recently become both highly successful and quite popular. The reason for its nearly universal appeal is simple - it plays records exactly as they were originally cut, thereby eliminating tracking error, and improving both stereo separation and overall sonic fidelity. Unfortunately, despite its benefits, the linear tracking tonearm alos produces an unwanted (and often audible) side effect - resonance. The Sony PS-X555ES uses microcomputer technology to control resonance.

The Problem of Low Frequency Resonance

A conventional tonearm pivots at a stable, reinforced point. By contrast, the linear tracking tonearm moves along the groove towards the center of the disc as it plays. This means that it lacks a rock-solid foundation. Since this is the key to fighting the low-frequency resonance that's fairly common during disc playback, linear tracking tonearms are prone to this type of distortion.

Resonance can actually be quite disturbing in a listaning situation - its manifestations include distortion, rumble, howl, and an overall dulling of the musics impact. It's a serious problem with all linear tracking turntables - except those equipped with Sony's unique Biotracer tonearm. The Sony Biotracer is the first - and to date, the only - linear tracking tonearm that effectively combats the effects of low-frequency resonance.

Biotracer Technology for Improved Performance

How  does the PS-X555ES control resonance? It thinks. The Biotracer tonearm of the PS-X555ES is a dynamic device that is constantly driven by two microcomputer controlled motors. When the microcomputer senses any variation from the correct tonearm position, it instantly alerts the motors 9one for horizontal motion, one for vertical), and instructs then to adjust the tonearm's motion. Not only does this ingenious system relieve resonance problems associated with the linear tracking design, it also helps combat distortion caused by warps and eccentricities in the disc itself. And previously annoying imperfections such as tonearm skating and improper stylus force adjustments are automatically corrected as well.

The Biotracer Supports Freedom of Choice

And the Biotracer does still more. With most turntables, your choice of cartridges is greatly limited - the tonearm accepts only a narrow range of cartridge mass and compliance. Butthat's not the case with the Biotracer. Because it is so effective in overcoming low-frequency resonance, the Biotracer permits you to install just about any cartridge you like. With most turntables, the choice of cartridge must be based on the equipment - with the PS-X555ES, you can select your cartridge according to its sonic characteristics.

Incorporates Many Other Design Innovations

Furthermore, all the special technology that's made Sony turntables so popular is also found on the PS-X555ES. That includes our Brushless Slotless (BSL) motor, recognized for its accuracy and reliability. Plus, Sony's quartz lock direct drive with magnedisc servocontrol ensures rotational precision. And height-adjustable gel-filled feet, combined with Sony's non-resonant SBMC base, resist acoustic feedback.

Naturally, all the convenience and performance features that have made the linear tracking design so popular are included in the PS-X555ES. For example, you can control the movement of the tonearm without ever raising the dust cover, and without risking damage to the record or the stylus - cueing and indexing are accomplished with front-panel feather-touch controls.

Specifications:

Tonearm Section

Tonearm Type:  Tangential Biotracer

Effective length:  130 mm (5-1/8")

Overall Arm length:  213 mm (8-3/8")

Tracking Error:  ±0,07°

Tracking Force Range:  0,5 - 2,5 grams

Cable Capacitance:  60 pf/meter; (87,5 pf total)

Usable Cartridge Weight (including Headshell):  10 - 19,5 grams

Supplied headshell:  7,2 grams

Turntable Section

Motor:  Linear BSL

Drive System:  Direct-drive

Control System:  Quartz lock control, magnedisc servo control system

Wow and Flutter:

WRMS :  0,025%

FG Direct :  0,015%

Signal-to-Noise Ratio:  78 dB (DIN-B)

Speed Accuracy:  better than 0,0003%

Start-up Time (at 33-1/3 rpm):  1/2 rotation

Platter Diameter:  320 mm (12-5/8 inches)

Platter Weight;  1,2 kg (with rubber mat)

Speeds:  33-1/3 and 45 rpm

Electromagnetic Breaking:  yes

Power Requirements:  AC 120 Volts , 60 Hz

Power Consumption: 23 Watts

Dimensions (W x H x D):  430 x 100 x 425 mm (17" x 4" x 16-3/4")

Weight:  7,4 kg (16 lb 5 oz)

Sony TC-K555ES cassette deck

Quite simply, Sony wanted to build a deck goodenough to be a part of the ES system. Se we addressed each of the three essential issues concerning cassette deck design - the heads, the transport, and the noise reduction system. Each was designed and constructed incorporting the most advanced technology available today.

A Third Head for Better Performance

Let's begin with the heads - the TC-K555ES employs a unique Independent Suspension three-head design. The record head has been designed with the wide head gap that is essential for wide dynamic range recordings, while the playback head retains the narrow gap required for accurate high frequency response. This is in sharp contrast to the glaring compromises of a two-head deck, in which a single head gap must adequately accommodate both requirements - an impossible task.

Superior Sound without the Struggle

Three-head design has been the cornerstone of superior cassette performance.  Unfortunately, in the past, three-haed decks have required critical and nearly constant azimuth adjustment to be effective. But Sony's inventive three-head design places the record and playback heads in close proximity to one another, eliminating the need for cumbersome azimuth adjustments. Yet the heads still remain physically distinct 9for optimized performance) and magnetically shielded from one another 9for minimal crossfeed). And Sony's exclusive independent Suspension design improves tape contact and azimuth accuracy, while reducing flux leakage. Result? Outstanding (and adjustment-free) performance.

The heads also combine an amorphous core material (whose irregular molecular structure provides superior magnetic performance) with modern laser construction technology to assemble the heads with exceptional precision. These laser Amorphous (LA) heads assure you superior sound and long life.

More Innovative Transport Technology

Another problem often associated with cassette decks is the distortion caused by inaccurate tape transport. A common manifestation of transport imperfection is called modulation noise. Sony's closed-loop dual capstan transport combats this problem. We've placed a capstan on either side of the tape path to isolate the tape passing across the heads form external influences 9such as the spooling motor). And, as a bonus, head-to-tape contact is also improved and performance remains consistent from one end of the tape to the other.

The Beautiful Sound of Silence

Perhaps the most heralded recent achievement in cassette deck technology is in the field of noise reduction - specifically, the development of Dolby C. and it's an impressive accomplishment, to be sure. With no more effort than simply flipping a switch, you can reduce the tape hiss in its most annoying frequencies by nearly 20 dB. The TC-K555ES lets you experience the wonder of Dolby C, while still providing compatibility with your tapes recorded with Dolby B - the older noise reduction system is included as well. And an anti-saturation circuit improves treble headroom by up to 4 dB, which makes proper recording utterly simple.

The TC-K555ES also includes a variety of convenience features, such as auto play; memory play; feaather-touch full-logic controls; a fluorescent Concentrated Display; variable bias for tape types I, II and II; and a Linear Counter that accurately reveals elapsed tape time in all transport modes (including rewind and fast forward). But it is most impressive for its unsurpassed basic performance and remarkable sonic capabilities.

Specifications

Fastforward/Rewind Time:  80 sec C-60

Wow and Flutter (WRMS):  0,04%

Frequency Response (±3 dB, re-20 dB)

Metal Type IV  :  25 Hz - 18,000 Hz

FeCr  Type III :  25 Hz - 18,000 Hz

UCX Type II :  25 Hz - 17,000 Hz

AHF Type I :  25 Hz - 17,000 Hz

Signal-to-Noise Ratio (re 3% T.H.D., peak Wtd):

Dolby Nr Off

Metal Type IV  :  60 dB

FeCr  Type III :  62 dB

UCX Type II :  59 dB

AHF Type I :   56 dB

Dolby B NR On

Metal Type IV  :  67 dB

FeCr  Type III :  69 dB

UCX Type II :  66 dB

AHF Type I :   63 dB

Dolby C NR On

Metal Type IV  :  73 dB

FeCr  Type III :  75 dB

UCX Type II :  72 dB

AHF Type I :   69 dB

Total Harmonic Distortion (at 1 kHz, re 0 dB record level):  0,8% (Type IV, Type II)

Crosstalk (1 kHz):  60 dB between tracks

Separation (1 kHz):  35 dB between channels

Input Sensitivity

Line :  77,5 mV (50 k Ω) - 20 dB

Output Level

Line :  435 mV (10 k Ω) -5 dB

Headphone level (8 Ω):  -20 dB to - 50 dB

Power requirement:  AC 120 V, 60 Hz

Power Consumption:  26 watts

Dimensions (W x H x D):  430 x 105 x 285 mm (17' x 4-1/4" x 11-1/4")

Weight:  6,1 kg (13 lb 8 oz)

Marantz PM-7001 KI amplifier

PM7001 KI - Signature Integrated Amplifier

The KI Signature series is for many years synonym of finest electronics with best sound quality. Every aspect of the design and construction of the PM7001 KI stereo amplifier has received Ken Ishiwata's personal attention to attain uncompromised quality. The copper-plated chassis and rear panel reduce signal-degrading electromagnetic interference, while its rigid dual layer chassis and solid aluminum front panel virtually eliminate mechanical vibration. Delivering 2 x 70 watts into 8 ohms (120 watts, 4 ohm), this 2-stage constructed Current Feedback amplifier features symmetrical circuits for perfect image balancing, and uses audiophile Customized Components and the new HDAMs to preserve the music's dynamic structure, tonal quality and stereo image. Power handling characteristics have been reshaped and the large toroidal transformer is designed for this renewed circuitry. Its low impedance, wide-bandwidth power supply ensures a massive reserve of energy, to drive even difficult speakers with ease. Enjoy the exclusivity of the Ken Ishiwata Signature integrated amplifier.

Sufficient real power capability to fill the room with musical enjoyment

Ultra low vibration and leakage flux keeps the signal sharp and minimizes internal electro magnetic distortion

Excellent frequency response and superb sonic performance for the highest standard such as SACD

Achieving a unprecedented dynamic, accurate and detailed sound reproduction

Two times identically lay out symmetric audio circuit boards secure precise stereo imaging

Bypasses the tone control circuitry to ensure the purest sound quality

Allows tonal adjustment to personal taste

For bi-wired connection of loudspeakers, or for multiroom applications

Flexible system integration and total control via one system remote

A touch of Ken Ishiwata

The PM7001 KI is a clear example of benchmark engineering and craftsmanship of Ken Ishiwata and features a number of Marantz sound enhancements. The PM7001 KI integrated amplifier is built on a rigid dual layer enforced chassis. All of the analogue signal and control circuits are separated and shielded to prevent cross-talk and other unwanted interference. A high grade power supply centered around a special selected toroidal transformer secures maximum separation, clarity and dynamics. This design configuration is capable of a clear and powerful reproduction of the most demanding musical performances. The strength of each KI Signature design can be found in the attention to detail and the synergy of the different elements

Specifications:

Power Output (20 Hz - 20 kHz, simultaneous drive of both channels)

2 x 70 W at 8 Ω  load

2 x 100 W at 4 Ω  load

Total Harmonic Distortion (20 Hz - 20 kHz, simultaneous drive of both channels, 8 Ω ):  0,02%

Power Bandwidth (8 Ω  load, 0,05% T.H.D.):  5 Hz - 60 kHz

Frequency Response:  5 Hz - 100 kHz ±3 dB

Damping Factor:  100 (8 Ω  load, 20 Hz - 20 kHz)

Input Sensitivity/Impedance

Phono  MM :  2,5 mV/47 k Ω

Cd, Line, Tuner, Aux :  200 mV/20 k Ω

Main In :  1,6 V/20 kohm

Output Load/Impedance

Pre Out :  16 V/560 Ω

Max. Allowed Phono Input :  130 mV

RIAA Deviation (20 Hz - 20 kHz):  ±0,5 dB

Signal-to-Noise Ratio (IHF-A, 1 W, 8 Ω  load)

Phono MM :  85 dB (5 mV input)

Cd, Line, Tuner, Aux :  88 dB (500 mV input)

Main IN :  107 dB

Tone Control

Bass :  ±10 dB at 50 Hz

Treble :  ±10 dB at 20 kHz

Power Requirement:  AC 230 V 50/60 Hz

Power Consumption:  470 W (2 x 100 W output, 4 Ω )

Dimensions (W x H x D):  440 x 128 x 364 mm

Weight:  10,5 kg

Audio Analogue Puccini amplifier

 Stereo Integrated Amplifier

Specifications:

Power Output (both channels driven, 8 Ω):  2 x 40 W

Input Sensitivity/Impedance (RMS):

Phono MM :  10 mV /47 k Ω

Phono MC :  1 mV / 100 Ω

Line :  1 V / 50 k Ω

Signal-to-Noise Ratio

Unweighted

Phono MM :  better than 70 dB

Phono MC :  better than 60 dB

Line :  better than 80 dB

A-weighted

Phono MM :  better than 80 dB

Phono MC :  better than 70 dB

Line :  better than 90 dB

Tape Output Level/Impedance (RMS):  1 V / 600 Ω

Total Harmonic Distortion:  less than 0,196 % (at 40 W, 8 Ω, 1 kHz)

Damping Factor:  better than 100 (at 1 kHz, 8 Ω, 1 W)

Slew Rate:  better than 10/µsec

Bandwidth:  20 Hz - 20 kHz (±0,1 dB);  5 Hz - 20 kHz (+3 dB)

Channel Separation (at 1 kHz, unused input shorted):  better than 80 dB

Inputs:  Phono MM/MC, Tuner, CD, Video, Aux, Tape

Nominal Voltage Supply:  115 V AC, 230 V AC; 50/60 Hz

Max. Power Consumption:  170 VA

Dimensions (W x H x D):  445 x 85 x 365 mm (17,52" x 3,35" x 14,4")

Weight:  7 kg (15,5 lbs)

Harman/Kardon HK 725 pre-amplifier

Harman Kardon introduces low negatiwe feedback design for inaudible TIM distortion

For the last few years,, audio manufacturers have been rushing to bring you newer,lower T.H.D. levels in their amplifier sections. And every year, they've accomplished this the simplest way they could. By adding negative feedback, a form of electronic compensation. Unfortunately, this "cure" for T.H.D. - typically 60 - 80 dB of negative feedback - creates another form of distortion. Transient Intermodulation Distortion, or TIM, which does far more to degrade the music than T.H.D. at Harman Kardon, we lowered T.H.D. the right way. With unique circuit design (US Patent #4.176.323) that lets us use just a fracrtion of the negative feedback typically used. The result is our new HK 700 series High Technology Separates. Built around our low negative feedback amp/preamp combination that delivers a crystal clear, totally transparent 65 watts per channel. You can also choose from a full-featured digital tuner, a phase locked analog tuner, and the most advanced cassette deck on the market.

The HK 725 High Technology pre-amplifier

Many of the critics from the most widely recognized audiophile publications consider the HK 725 one of the best preamplifiers on the market

As with all our components, the KH 725 was designed with careful attention to even the finest details. Instead of the typical 4-stage phono section, we used 8 stages. And we used FET front ends on both our low and high level stages. These provide higher Signal-to-Noise ratio than other designs. Instead of conventional rotary tone controls, we used fixed resistor push-buttons because they provide lower distortion. The HK 725 also allows you to defeat the tone controls altogether, giving you the clearest, cleanest sound possible.

Even our volume controls is unique. With twelve wipers instead of the usual four. This extra bit of engineering not only provides a smoother acting, longer lasting control, but also helps lower distortion as well. And we didn't forget convenience. You get facilities for two tape decks, with 2 way tape copy that allows you to monitor any source you like while copying from one deck to another. Plus loudness, subsonic and high cut filters to help you contour your system to your listening environment.

The Harman kardon HK 725 stereo preamplifier is housed in a relatively small metal cabinet that matches its associated model HK 770 power amplifier. Individually, or in conjunction with the power amplifier, the sound quality is best described as "exceptionally clean" particularly with respect to the deep bass. An unusual feature is switch-selected bass and treble equalization, rather than rotary controls. The bass and treble have eight switches each, four providing boost in steps of 2 dB at 50 Hz and 10 kHz; four providing attenuation in 2 dB steps at the same frequencies. An illuminated switch in the center of each row of buttons provides a tone control defeat. Subsonic and high cut filters round out the equalization. Switching is provided for automatic tape duplication from, or to, either of two recorders. A panel-mounted headphone jack allows the signal to be monitored without going through the associated power amplifier. One unswitched and two switched AC convenience outlets are provided.

Specifications

Frequency Response : less than 1 Hz to beyond 150 kHz   +0 -1 dB

Total Harmonic Distortion: 

Phono :  0,009%

High Level :  0,005%

Intermodulation Distortion:  0,009% at 2 volts output

RIAA Equalization:  ±2 dB (20 -20,000 Hz)

Signal-to-Noise Ratio:

Phono :  90 dB IHF-A

High Level :  106 dB IHF-A

Phono Overload:  250 mV at 1 kHz

Input Sensitivity/Impedance:

Phono :  2,3 mV/47 k Ω

High Level :  145 mV/23 k Ω

Slew Rate:  Greater than 200 volts/µsec to output with IHF standard

Tone Control Range

Low :  ±8 dB at 50 Hz

High :  ±8 dB at 10 kHz

Dimensions (W x H x D):  385 x 72 x 320 mm (15,2 x 2,9 x 12,6 inches)

Weight:  4,2 kg (9,25 pounds)