Denon PMA-770 amplifier

Zero Dynamic Distortion

A Non-negative feedback amplifier design is ideal for driving speakers properly. Since audio signals are amplified in one direction only, the primary causes of dynamic distortion, such as time delay, are eliminated. Static distortion, which is caused by the non-linear amplification characteristics of amplifying components such as transistors, is reduced to almost theoretical limits by Denon's Distortion Servo Circuit.

Because of Denon's Non-Negative feedback technology and Distortion Servo-Circuit, the dynamic or pulsive music signals (those that change every moment in level and frequency) can be driven at high power through the widest variety of loudspeakers with surprising clarity and resolution.

The circuit is made up of 3 stages of low noise FET differential amplifiers. In the first stage current mirrors operate as the voltage amplification stage. The complementary emitter follower permits low impedance to be obtained; and is separated completely from the current amplification stage. The current amplification stage, a push-pull output configuration uses high quality, high speed power transistors, providing the speed and accuracy required for accurate reproduction of the original signal.

 

High Efficiency "Direct-A"  Power Amplifier

At the output stage, the Denon developed "Zero-Cross Linear Bias Circuit" eliminates switching distortion caused by the turning On and Off of the power transistors. This circuit enables the PMA-770 to combine both the sound quality of Class A with the high efficiency associated with Class B amplification.

 

Clean Layout and Simple Circuit Construction

The basic construction of the PMA-770 circuit has purposely been kept clean and simple as possible. The entire signal route is totally capacitorless. Even when using MC cartridges, the PMA-770 does not place a single capacitor in the main signal route, all the way from the input to the speaker output. This design speeds up while maintaining the purity of the signal and is what Denon describes as totally "DC construction"

The amplification circuit is of the dual FET differential type, resulting in greatly improved Signal-to-Noise Ratio and reduced distortion. Additionally, the employment of Denon's Direct DC Servo Circuit shut out DC drifts and stabilizes the ultra-low frequencies.

 

Specifications

Power Amplifier Section

Circuit Type:  All stage direct DC servo circuit

Rated Output Power (Both Channel Drive)

100 W + 100 W at 20 Hz to 20 kHz 8 0hm load (DIN, U.K. Europe, USA)

150 W + 150 W at 1 kHz , 4 Ω  load (DIN, U.K. USA)

50 W + 50 W at 1 kHz, 4 Ω  Load (IEC)

Total Harmonic Distortion :

0,008% (20 Hz - 20 kHz at -3 dB rated output 8 Ω  Load)

0,02% (20 Hz - 20 kHz at rated output 8 Ω  Load )

Intermodulation DIstortion :  0,002% below 7 kHz/ 60 Hz : 1/4 (at amplitude output equivalent to rated output)

Output Bandwidth:  5 Hz - 100 kHz (IHF T.H.D. 0,035%)

Transmission Characteristics:  1 Hz - 250 kHz +0 dB -3 dB (at 1 W output)

Input Sensitivity:  150 mV

Input Impedance:  47 k Ω

Output Impedance:  0,08 Ω  (1 kHz)

Output Terminals: 

Speaker A and B Load 4 - 16 Ω or A + B Load 8 - 16 Ω

Headphone/Stereo headphone

Equalizer Amplifier Section

Max. Output:  10 V (at 47 k Ω  load)

Rated Output :  150 mV

Total Harmonic Wave Distortion :  below 0,002% (at 1 kHz, 8 V output)

Input Sensitivity/Impedance

Phono MM :   2,5 mV/47 k Ω

Phono MC :  125 µV/100 Ω

Tuner :  150 mV/47 k Ω

Aux, Tape :  150 mV/47 k Ω

RIAA Deviation:

Phono MM :  within ±0,2 dB (20 Hz - 100 kHz)

Phono MC :  within ±0,2 dB (20 Hz - 100 kHz)

Overall Characteristics

Signal-to-Noise Ratio (IHF A network)

Phono MM 1, 2 :  90 dB (input terminals short-circuited for 2,5 mV input)

Phono MC :  73 dB (input terminals short-circuited for 250 mV input)

Tuner, Tape, Aux :  110 dB (input terminals short-circuited)

Tone Control Adjustable Range

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Subsonics:  18 Hz at 6 dB/oct

Loudness

Low Frequency :  +7 dB at 100 Hz

High Frequency :  +6 dB at 10 kHz

AC Outlet:  switched x 2 100W Total, unswitched x 1 250 W

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

Power Consumption:270 W (USA); 400 W (IEC); 290 W (Hong Kong); 800 W Maximum Output

Dimensions (W x H x D):  434 x 132 x 407 mm

Weight:  12 kg

 

Denon PMA-750 amplifier

Integrated Amplifier Features:

Non-NFB (Non-Negative Feedback) Amplifier, Zero Dynamic Distortion (Patent Pending)

Super Equalizer; Super Wide RIAA Deviation 20 Hz - 100 kHz ±0,2 dB (Patent Pending)

High Power Direct-A Amplifier 80 W + 80 W

Real Drive Circuit: Significantly Reduces Distortion Under Real Operating Conditions - When Driving Speakers

Clean Simple Circuit Design Combined wirh High Quality Construction

Real-Time Tone Control

Dual Speakers Output Terminals (A or B, A+B)

Dual Input/Output Terminals for Interconnection with Two Tape Decks

A Defeatable Subsonic Filter (18 Hz, 6 dB/oct) Eliminates Unneeded Ultra Low Frequency Noise

Direct Coupling Switch Removes Tone Controls from The main Circuit

Mode Switch with Facilities for Stereo Reverse and Monaural Reproduction

Loudness Control Switch

High Speed Protection Circuity

 

Principle of the Non-Negative Feedback Amplifier

The fundamental block diagram is shown as under. At first, input signal e, and inversed output signal e, are mixed at the input of the direct DS. amplifier. Then, the distortion component d is extracted. This d is amplified by the direct DS. amplifier and is inversed and fed into the main amplifier A, with the original signal e, Thus distortion is finally reduced dramatically and static distortion is brought to zero.

 

Specifications

Power Amplifier Section

Circuit Type:  All stage direct DC servo circuit

Rated Output Power (Both Channel Drive)

80 W + 80 W at 20 Hz to 20 kHz 8 0hm load (DIN, U.K. Europe, USA)

100 W + 100 W at 1 kHz , 4 Ω  load (DIN, U.K. USA)

50 W + 50 W at 1 kHz, 4 Ω  Load (IEC)

Total Harmonic Distortion :

0,008% (20 Hz - 20 kHz at -3 dB rated output 8 Ω  Load)

0,02% (20 Hz - 20 kHz at rated output 8 Ω  Load )

Intermodulation DIstortion :  0,002% below 7 kHz/ 60 Hz : 1/4 (at amplitude output equivalent to rated output)

Output Bandwidth:  5 Hz - 100 kHz (IHF T.H.D. 0,035%)

Transmission Characteristics:  1 Hz - 250 kHz =0 dB -3 dB (at 1 W output)

Input Sensitivity:  150 mV

Input Impedance:  47 k Ω

Output Impedance:  0,08 Ω  (1 kHz)

Output Terminals: 

Speaker A and B Load 4 - 16 Ω or A + B Load 8 - 16 Ω

Headphone/Stereo headphone

Equalizer Amplifier Section

Max. Output:  10 V (at 47 k Ω  load)

Rated Output :  150 mV

Total Harmonic Wave Distortion :  below 0,002% (at 1 kHz, 8 V output)

Input Sensitivity/Impedance

Phono MM :   2,5 mV/47 k Ω

Phono MC :  125 µV/100 Ω

Tuner :  150 mV/47 k Ω

Aux, Tape :  150 mV/47 k Ω

RIAA Deviation:

Phono MM :  within ±0,2 dB (20 Hz - 100 kHz)

Phono MC :  within ±0,2 dB (20 Hz - 100 kHz)

Overall Characteristics

Signal-to-Noise Ratio (IHF A network)

Phono MM :  88 dB (input terminals short-circuited for 2,5 mV input)

Phono MC :  72 dB (input terminals short-circuited for 250 mV input)

Tuner, Tape, Aux :  110 dB (input terminals short-circuited)

Tone Control Adjustable Range

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Subsonics:  18 Hz at 6 dB/oct

Loudness

Low Frequency :  +7 dB at 100 Hz

High Frequency :  +6 dB at 10 kHz

AC Outlet:  switched x 2 100W Total, unswitched x 1 250 W

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

Power Consumption:230 W (USA); 400 W (IEC); 200 W (Hong Kong); 680 W Maximum Output

Dimensions (W x H x D):  434 x 132 x 407 mm

Weight:  12 kg

 

Denon DR-M4 cassette deck

Computer Servo - The heart of the deck

It's a heart you can trust. Head position, hub rotation, timing, and so forth are all in the firm control of the computer. The tape is surely but gently transported, smoothly and silently, without unwanted mechanical noise. Quiet and reliable tape transport to deliver the full benefits of the 3-head design, that's Denon's essence of high technology.

A Transport to bring out the best in 3-head performance

To the silent mechanism add rotational accuracy at the limits of perfection. Reduce the slip between the pinch-roller and capstan. Improve tape tension stability while attaining ultra-smooth tape drive performance. Make the capstan motor direct drive, and give it a high-precision capstan shaft. Put it all together and it's a tape transport mechanism good enough to be called Denon.

 

Exclusive 2-Capstan System with Non-elastic Belt

Employment of the 2-capstan system of interposing heads between capstans has suppressed most of the non-uniformity of tape tension that may be caused by the supply side of the tape deck, and of tape vibration, assuring better head-to-tape contact and less level fluctuation. Consequently, modulation noise is reduced, and very clear sound quality is obtained. Moreover, because the 2 capstans are driven through a non-elastic belt.

 

Other features:

Direct Drive Servo Motor non-slip Reel Drive Design

SF Combination head for Super Frequency Response

Electronic "Sound Freshness" Preserver

Using Denon's Quartz DD motor for capstan driving

Memory stop function linked to the tape counter

Automatic music search system

 

Specifications

Type:  4-track, 2-channel , stereo cassette deck

Heads

Record/Playback :  SF combination head

Erase :  Double gap ferrite head

Motors

2 x DC motor

1 x Denon quartz, DD FG servo motor  for capstan

Wow and flutter:  0,027% WRMS

Fast Forward Time:  approx less than 90 sec (C-60)

Frequency Response :  20 Hz - 23 kHz (Metal tape)

Signal-to-Noise Ratio :  better than 73 dB (Dolby CNR on 3% T.H.D. by CCIR/ARM)

Input

Microphone :  0,35 mV (10 k Ω )

Line :  77,5 mV (50 k Ω )

Output

Line :  775 mV (10 k Ω  load)

Headphones :  1,2 mW (8 Ω  load)

Power Requirements: 110 - 240 V 50,60 Hz

Power Consumption:  22 W

Dimensions (W x H x D):  434 x 115 x 286 mm

Weight:  6,0 kg

 

Denon DR-M3 cassette deck

 

3-Head Microcomputer-controlled Tape Tuning System Stereo Cassette Deck

Features

Silent operation with smooth operational feel

Wide scale 2-color FL peak meter with automatic peak hold previsions

A microcomputer-controlled tape tuning system, automatically tunes itself for the optimal recording characteristics

A cam-servo motor with a microcomputer control rotary encode checking system

Improved tape tension servo sensor mechanism, much more stable tape head contact and tape travel

 

Computer Tuning (CTS)

This tuning system automatically sets the equalizer and recording sensitivity, both of which are important to maximizing the performance of various tapes and to make high quality recordings, the tuning time is only 5 seconds; recording chances are not missed. When the cassette is loaded, the auto tape selector sets the deck to the standard optimum condition. Strictly speaking, however, the recording sensitivity and frequency characteristics of the tapes vary, depending on its type.

The computer tuning system allows the maximum performance of the tape to be heard and at the same time ideally corrects the frequency characteristics to a flat and wide range characteristic.

 

Specifications

Type:  Vertical tape loading 4-track 2-channel stereo cassette tape deck

Heads:

1 x SF Record/Playback combination head

1 x Double gap ferrite Erase head

Motors

For capstan : 1 x FG servo DD motor for

For Real Winding : 1 x DC motor

Tape Speed:  4,8 cm/sec

Fast Forward /Rewind Time"  approx. 90 sec. C-60 cassette tape

Recording Bias:  approx. 105 kHz

Signal-to-Noise Ratio Overal (at 3% T.H.D. level):  Dolby C ON more than 73 dB (CCIR/ARM)

Frequency Response Overal (at -20 dB Metal tape) :  25 - 21,000 Hz ±3 dB

Frequency Range (at -20 dB Metal tape):  20 - 23,000 Hz

Channel Separation:  better than 40 dB (at 1 kHz)

Crosstalk:  better than 65 dB (at 1 kHz)

Woa and Flutter:  less than 0,027% WRMS

Input

Microphone :  0,35 mV (-67 dB) with input level control at maximum

Input Impedance :  10 k Ω  unbalanced

Line :  77,5 mV with input level control at maximum

Input Impedance :  50 k Ω  unbalanced

Output

Line :  775 mV (0 dB) with output level control at maximum (with 10 k Ω  load, recorded level of 200 Pwb.mm)

Headphone :  1,2 mW with output level control at maximum (optimum load impedance 8 Ω  to 2 k Ω )

Accessories :  Parallel PIN cord x 2, cleaning stick set x 1

Power Requirements:  AC 110, 120, 220 - 240 V, 50/60 Hz

Power Consumption:  22 W

Dimensions (W x H x D):  434 x 115 x 286 mm

Weight:  5,7 kg

Denon DR-M2 cassette deck

3-head Tape Tension Servo System Stereo Cassette Deck

Features:

Newly developed flat better D.D. capstan servo motor. Drawbacks from belt or idler designs are completely eliminated

The cam-servo motor with a microcomputer control rotary encode checking system

Improved tape tension servo sensor mechanism

Computer full logic mechanism with high reliability

New non-slip reel drive mechanism

Dolby C noise reduction. Double Dolby system

 

Specifications

Type:  Vertical tape loading 4-track 2-channel stereo cassette tape deck

Heads:

1 x SF Record/Playback combination head

1 x Double gap ferrite Erase head

Motors

For capstan : 1 x FG servo DD motor for

For Real Winding : 1 x DC motor

Tape Speed:  4,8 cm/sec

Fast Forward /Rewind Time"  approx. 90 sec. C-60 cassette tape

Recording Bias:  approx. 105 kHz

Signal-to-Noise Ratio Overal (at 3% T.H.D. level):  Dolby C ON more than 73 dB (CCIR/ARM)

Frequency Response Overal (at -20 dB Metal tape) :  25 - 21,000 Hz ±3 dB

Frequency Range (at -20 dB Metal tape):  20 - 23,000 Hz

Channel Separation:  better than 40 dB (at 1 kHz)

Crosstalk:  better than 65 dB (at 1 kHz)

Woa and Flutter:  less than 0,027% WRMS

Input

Microphone :  0,35 mV (-67 dB) with input level control at maximum

Input Impedance :  10 k Ω  unbalanced

Line :  77,5 mV with input level control at maximum

Input Impedance :  50 k Ω  unbalanced

Output

Line :  775 mV (0 dB) with output level control at maximum (with 10 k Ω  load, recorded level of 200 Pwb.mm)

Headphone :  1,2 mW with output level control at maximum (optimum load impedance 8 Ω  to 2 k Ω )

Accessories :  Parallel PIN cord x 2, cleaning stick set x 1

Power Requirements:  AC 110, 120, 220 - 240 V, 50/60 Hz

Power Consumption:  22 W

Dimensions (W x H x D):  434 x 115 x 286 mm

Weight:  5,7 kg

 

Denon DR-M1 cassette deck

Two-head Microcomputer controlled Cam Encord Mechanism Stereo Cassette Deck

Features:

Microcomputer Controlled Cam encord method "silent mechanism"

Automatic Fade In / Fade Out system

Automatic tape selector for Normal, Chrome and Metal cassette tape

Memory Stop system

Automatic Timer play and record function

Originally developed Denon Rec/Mute system

 

Specifications:

Type:  4-track, 2-channel stereo cassette deck

Heads

Record/Playback :  SF R/P head

Erase :  Double gap ferrite head

Motors:  DC motor x 2

Capstan: DC motor x !

Wow and Flutter:  0,035% WRMS

Fast Forward Time:  approx. 90 sec (C-60)

Frequency Response:  20 Hz - 20 kHz (Metal)

Signal-to-Noise Ratio:  better than 73 dB (Dolby C NR on, at 3% T.H.D. by CCIR/ARM)

Input Sensitivity/Impedance

Microphone:  0,35 mV / 10 k Ω

Line :  77,5 mV / 50 k Ω

Output Load/Sensitivity

Line :  775 mV / 10 k Ω

Headphones :  1,2 mW / 8 k Ω (acceptable impedance of headphones 8 - 2 k ohms)

Power Requirements:  110, 120, 220, 240 AC, 50/60 Hz

Power Consumption:  19 W

Dimensions (W x H x D):  434 x 115 x 286 mm

Weight:  5,5 kg

 

Denon PRA-1100 pre-amplifier

Stereo Pre-Amplifier

 

Specifications

Equalizer Amplifier (Phono In - Rec Out)

Input Sensitivity/Impedance:

Phono MC :  0,2 mV/100 Ω

Phono MM :  2,5 mV/47 k Ω

Phono Variable Input Capacitor:  200 pF - 600 pF

Max. Input Level

Phono MC :  13 mV/ 1 kHz

Phono MM :  160 mV/ 1 kHz

Max. Output ? Rated Output:  10 V / 150 mV

Total Harmonic Distortion :  less than 0,001% (1 kHz, 7 V output)

RIAA Deviation

Phono MC :  20 Hz - 100 kHz ±0,3 dB

Phono MM :  20 Hz - 20 kHz ±0,2 dB

Signal-to-Noise Ratio

Phono MC :  79 dB (A -weighted) at 0,5 mV Input

Phono MM :  96 dB (A -weighted) at 5 mV Input

Gain

Phono MC :  57,5 dB / 1 kHz

Phono MM :  35,6 dB / 1 kHz

Phono Subsonic Filter:  16 Hz, 12 dB/oct

High-Level Amplifier (AUX In - Pre Out)

Input Sensitivity/ Impedance:

CD, Tuner, Aux 1, 2; Tape 1, 2 :  150 mV / 47 k Ω

CD Direct :  1 V/ 10 k Ω

Max. Output/Rated Output:  10 V / 1 V

Total Harmonic Distortion :  less than 0,003% (20 Hz - 20 kHz, 5 V output)

Frequency Response:

1 Hz - 300 kHz +0,2 dB -3 dB

10 Hz - 100 kHz ±0,2 dB

Signal-to-Noise Ratio :  105 dB (A -weighted)

Tone Control:

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Muting:  PRE Out Off and Headphones circuit muting (indication by LED)

Gain :  16,5 dB

Output Impedance:  10 Ω

General

Power Requirements:  AC 220 - 240 V 50/60 Hz

Power Consumption:  15 W

DC Output:  15 V x 2 (1 mA)

Dimensions (W x H x D):  434 x 119 x 302 mm (17-3/32" x 4-11/16" x 11-57/64")

Weight (net):  5,0 kg (11 lbs 1 oz)

 

Denon POA-800 power amplifier

Stereo-Monaural Power Amplifier

 

 

Specifications

Rated Power Output

Stereo

50 W per channel, min. RMS, at 8 Ω  from 20 Hz to 20 kHz with no more than 0,05% T.H.D.

90 W + 90 W (4 Ω , 1khz, T.H.D. 1%)

Monaural

120 W channel, min. RMS, at 8 Ω  from 20 Hz to 20 kHz with no more than 0,08% T.H.D.

150W (4 Ω , 1khz, T.H.D. 1%)

Dynamic Power

Stereo

130 W + 130 W at 4 Ω

150 W +150 W at 2 Ω

Monaural

180 W at 4 Ω

190 W at 2 Ω

Total Harmonic Distortion (-3 dB at rated output , 8 Ω ) 

Stereo :  less than 0,008%

Mono :  less than 0,007%

Intermodulation Distortion (60 Hz/7 kHz : 4/1 at rated output , 8 Ω )

Stereo/Mono :  less than 0,03%

Power Bandwidth:  10 Hz - 50 kHz (8 Ω , T.H.D. 0,1%)

Frequency Response:  1 Hz - 100 kHz +0 -3 dB at 1 W

Input Sensitivity/Impedance: 

Stereo :  1 V/ 25 k Ω

Mono :  0,85 V/ 25 k Ω

Output Impedance:  0,1 Ω  (1 kHz)

Signal-to-Noise Ratio (A weighting)

Stereo :  120 dB

Mono :  114 dB

Output Terminals

Speakers :  4 Ω  Min.

Power Requirements:  AC 110, 120, 220, 240 V 50/60 Hz

Power Consumption: 150 - 160 W (3 A in USA, Canada)

Dimensions (W x H x D):  434 x 120 x 300 mm

Weight:  6,8 kg

 

Denon DP-50F turntable

Model DP-50F has fundamentally the same mechanism as that of the DP40F. It is an automatic record player equipped with the phono motor of higher performance to attain the rotational characteristics equivalent to that of the state-of-the-art. Manual record player, and at the same time, the operational flexibility is further improved.

 

Newly developed electronically servo controlled tonearm truthful to the will of the listener

DP50F is equipped with a new mechanism of electronically servo controlled tonearm, the fruit of all Denon's servo technology. Without ever touching the tonearm, most delicate operation can be accomplished; you can select the program, or get the head of a band with ease and accuracy smoothly and without a touch of doubt.

The mechanism is, when the position selector on the front panel is turned, the special MC type angular control motor is servo controlled, and the arm can be smoothly moved to any optional point on the record disc. Furthermore, as this auto mechanism is of non-contact type, the sensitivity of the tonearm itself is not affected at all. No trickly movement results even if the arm is touched while it is being moved.

 

Convenient self-illuminating push button memorizing the record size for the convenience of the listener.

The DP50F is equipped with one-touch push button to handle locating the program head of 30 cm/17 cm record disc as well as with the positions selector. Just press one of the self-illuminating record selecting switches and than the Start switch. The tonearm moves smoothly to the position of the disc size selected and starts playing. No need to operate the position selector, quick and accurate record playing can be enjoyed.

This operation is easy to release. Just turn the locate switch On (self-illuminating type with the orange lamp to prevent misoperation). With this switch, yuo can accomplish the free operation of the position selector just as with the DP40F.

 

Specifications

Drive System:  Direct-drive by AC servo-motor

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  0,015% WRMS

Rumble:  less than -75 dB (DIN B)

Rise Time:  less than 1,5 sec, to reach 33-⅓ rpm

Platter:  Casted aluminum, 300 mm diameter

Motor:  AC servo motor

Speed Control System:  Speed servo control by frequency detection system combined with phase control system with reference to the quartz crystal oscillator.

Tonerarm

Type:  S-shaped, static balance type with dynamically damped system

Automatic Mechanism:  Electronically servo controlled

Effective Lenght:  244 mm

Stylus Force Range:  0 - 2,5 g/rotation; 0,1 g direct reading

Acceptable Weight of Cartridge:  15 - 21 g (including shell)

Headshell:  Impact molded rigid light metal, 9 g (net)

Output Cord:  Low capacitance cord. Approx. 1,2 m

General

Separate Step-Down Power Transformer:

Input:  AC 117, 220, 240 V 50/60 Hz

Output AC 100 V, 50  VA

Weight: approx. 2,9 kg

Power Requirements: AC 100 V 50/60 Hz

Power Consumption:  19 W

Dimensions (W x H x D):  493 x 438 x 160 mm

Weight:  12 kg

 

Denon DP-40F turntable

 Model DP40F is a single play full automatic record player developed from that principle. The basis of this full automatic record player is of course Denon's unique high-performance direct drive record player, with Phase Locked Loop (PLL).

Electronically servo controlled tonearm the unity of accurate servo technology, position selector having unique operational flexibility, and non-contact electronic, anti-skating devices are newly added in a pursuit of the ideal form of this record player system. Easy operation is also accomplished.

Now you are from that tense moment of actually lowering the stylus onto the record disc, the tonearm can be remote-controlled by your will. Full automatic record player created by Denon always have the extra and advanced key compared with other full automatic players.

 

Features

Tonearm can be freely operated at panel with the dust cover closed.

Equipped with the electronically servo controlled tonearm so completely different from any other full automatic record players. You can easily locate the head of a program or repeat playing froms desired part to the end of the record.

All the tonearm motion is electronically controlled so that its operational mode can be changed smoothly and quickly.

Thanks to the non-contact auto-arm mechanism, no-load is applied a the tonearm or turntable

Light stylus force, high-compliance cartridges can be used in full confidence. So gentle with no mechanical sound.

 

Horizontal movement of the tonearm is servo controlled allowing gentle smooth movement.

Anti-skating mechanism eliminates the scating of stylus as it functions after the stylus is lowered onto the record disc. You are now free from the worry of damaging the stylus or record disc.

A damping material inserted in the rear part of the tonearm. The tonearm is hardly affected by the external vibration.

Head shell, the effective combination of the rigid light alloy and special elastic material to supress resonance

Speed servo-control, the unique magnetic record detection system of quick response; Denon Quartz turntable is a combination of the speed servo-control and the phase control by the crystal oscillation.

Wood grain finish elegant cabinet. More than sufficient measures taken again howling.

 

Specifications

Drive System:  Direct-drive by AC servo-motor

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  0,015% WRMS

Rumble:  less than -75 dB (DIN B)

Rise Time:  less than 1,5 sec, to reach 33-⅓ rpm

Platter:  Casted aluminum, 300 mm diameter

Motor:  AC servo motor

Speed Control System:  Speed servo control by frequency detection system combined with phase control system with reference to the quartz crystal oscillator.

Tonerarm

Type:  S-shaped, static balance type

Automatic Mechanism:  Electronically servo controlled

Effective Lenght:  244 mm

Stylus Force Range:  0 - 2,5 g/rotation; 0,1 g direct reading

Acceptable Weight of Cartridge:  15 - 21 g (including shell)

Headshell:  Impact molded rigid light metal, 9 g (net)

Output Cord:  Low capacitance cord. Approx. 1,2 m

General

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

Power Consumption:  18 W

Dimensions (W x H x D):  485 x 437 x 146 mm

Weight:  12 kg

Denon DCD-2560 CD player

It's not just the technology; it's the application of the technology.

Denon's "Design Integrity" philosophy has always held that the way a technology is employed is as important as the technology itself.

To test this premise, Denon digital audio and studio recording engineers compare their own vast library of digital master tapes with the Compact Discs releases of the same material. This on-going listening and measurement research reveals that at present the finest CD quality can be obtained by the meticulous application of 20-bit digital-to-analog conversion.

Case in point; The DCD-2560 employs four separate DACs utilizing Denon's Lambda System Super Linear Converter technology to eliminate the aero-cross distortion and non-linearity that plagues conventional CD players, especially at low signal levels. Each Denon Super Linear Converter is factory hand-tuned for maximum resolution. In addition, Denon's unique half-sample interpolation system produces an effective 16x over-sampling rate to eliminate phase shift for a more accurate sound stage with true three-dimensional imaging.

20-bit SLC's enable Denon to offer Variable Pitch, which lets you compress recordings, tune your CD player to musical instruments, adjust tempo for dancing, create perfect segues while mixing, etc. Peak Search finds the point in a disc with the highest level to set recording levels most accurately. Auto Space inserts four second pauses between tracks to help locate selections. A Digital Fader fades recordings in and out while dubbing. Time Edit allows you to input the tape length you are using. Pick enhances this function by letting you rearrange the order of tracks for the best fit on the tape. Link extends the process over 2 CDs for longer tape lengths.

The critically-acclaimed Denon DCD-2560. a reaffirmation of one of life's oldest adages. It's not only whether you win the technology race, but also how you play the game.

 

Specifications

No. Of Channels: 2 channels

Frequency Response; 2 - 20,000 Hz

Dynamic Range:  100 dB

Signal-to-Noise Ratio:  116 dB

Total Harmonic Distortion:  0,0018% (1 kHz)

Separation:  110 dB (1 kHz)

Wow and Flutter:  Below measurable limit:  (±0,001% W peak)

Output Voltage:  2,0 V Variable 0 - 2 V

Power Requirements:  110 V, 20 - 240 V, 50/60 Hz

Power Consumption:  20 W

Dimensions (W x H x D):  434 x 122 x 360 mm (17-3/32" x 4-51/64" x 14-11/64")

Weight:  10,5 kg