What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Dual C 830 cassete deck

Three Head Cassette Deck
Dual  C 830 front loading stereo cassette deck offers three heads for true tape monitoring during recording, full record/playback metal capability, and electronic fade/edit for rediting during playback. A phase-locked loop DC servo motor with integral frequency generator provides highly accurate and stable tape drive, according to the manufacturer. Logic-controlled tape-transport functions and an electronic tape-motion sensor prevent jams and tape spills. A unique Dual Direct Load and lock System (DLLS) eliminates hinged cassette door and provides automatic head protection during insertion and removal of a cassette. A six-way bias/equalization switch includes a setting for new metal tapes. Equalized LEDs provide peak-level indications.
Other features; twin-belt drive system; two-way line/MIC mixing; switchable limiter circuit; headphone level controls; MPX filter switch; Dolby noise reduction; left/right microphone inputs; Sendust record and playback heads.
Motor:  PLL DC servomotor type
Heads / Composition:  3 / Sendust, high flux
Speed Accuracy:  less than 0,4%
Wow and Flutter (WRMS):  ±0,035%
Frequency Response (±3 dB, w/MPX filter switched out):
With Ferric Oxide :  20 zh - 17 kHz
With Chromium Dioxide :  20 Hz - 18 kHz
With Ferrichrome :  20 Hz - 19 kHz
With Metal ;  20 Hz - 20 kHz
Signal-to-Noise Ratio (Dolby in):
Ferric Oxide tape :  better than 67 dB
Chromium Dioxide  tape :  better than 67 dB
Ferrichrome tape :  better than 69 dB
Metal tape :  better than 69 dB
Harmonic Distortion:  less than 0,4%
Erasure at 1 kHz :  better than 70 dB
Cross Talk
In Opposite Direction:  better than 70 dB
Between Stereo Channels ;  better than 40 dB
Fast Wind Time (C-60):  65 sec
Dimensions:  17-3/16" x 5-3/4" x 13-3/8"

Technics RS-M68 cassette deck

Auto-Reverse Cassette Deck
Technics offers the auto-reverse stereo cassette deck with four track SX head, memory auto-play, and two-color FL peak meters. The RS-M68 features a choice of three separate transport modes. Cont - plays the tape endlessly until it is stopped manually. Rev - plays or records one complete cycle of the tape and then stops automatically. Non-Rev - disengages the auto-reverse mechanism after one side is played. To play or record the other side, when the non-reverse mode is in use, just press the key for the opposite direction since there is no need to turn the cassette over.
Outstanding features include: cue/review operation (which is rarely seen on auto-reverse units); FC servo DC motor and twin, dynamically-balanced flywheels; separate three-position bias and equalization selectors; a Dolby NR system with MPX filter; friction-coupled L/R input level controls; oil-daamped soft loading and float-up ejection. Still other features are; large tape-direction indicators; memory on/off indicator lamp; timer standby switch; pause control; removable cassette compartment door; record indicator lamp; mic/line input selector; left and right channel mic input jacks; output level control (line and headphones); stereo headphone jack; stop eject combinationn key and an illuminated tape compartment.

Philips GA-202 turntable

Philips Electronic Turntable with Tone Arm
The GA-202 electronic turntable is a new state-of-art. Unitized single-play record player complete with tone arm and hinged, removable dust cover.
Solid state transistor circuits control and automatically maintain precise turntable speeds, individual potentiometers fine calibrate all speeds for correct musical piych. The electronic brain constantly senses and continually compensates for variations in line voltage, frequency, stylus/groove friction and cleaning brush drag. Exact turntable speed is maintained independently of phono cartridge tracking force adjustment. A photo-electronic circuit silently switches off the GA-202 at the end of a record.
The turntable platter and tone arm re integrally coupled and mounted on a free-floating sub-chassis. Tone arm eith both lateral and vertical low-friction bearings. Tracking force is easily and accurately adjusted with a built-in sliding gauge on the tone arm. Stylus side thrust compensation and anti-skate bias adjustment is variable or may be left inoperative. Cueing is accurate up to the runout groove.
The GA-202 styling is aesthetically simple and combines advanced electronics mechanical design and functions into an attractive, silent and convenient instrument for faithful record reproduction. It introduces a new standard of performance to music lovers who prefer a manual turntable.
Drive System:  belt drive
Speed Control:  electronic
Speeds:  33 ; 45; 78 rpm
Speed Adjustment Range:  ± 2%
Drift:  less than 0,2%
Wow and Flutter:  less than 0.13% (DIN)
Rumble:  less than 60 dB (DIN B)
Arm Friction:  less than 50 mgf
Tracking Error:  less than 0°7'/cm
Stylus Force:  1 to 4g
Line Voltage:  110/120 V, 220/240 V; 50/60 Hz
Power Consumption:  4W
Dimensions (W x H x D):  395 x 135 x 337 mm
Weight:  7,5 kg

Technics SA-404 receiver

With all the receivers to choose from,how do you make the right choice? By comparing power, performance and price. It's the only meaningful way to tell how much receiver you're getting for your money.
So compare.
As you can see, Technics gives you a lot. A lot of power and a lot of performance at a avery good price. That's because our receivers have the technology you need. Like hefty transformers and big power capacitors to punch out deep bass notes with authority. Like a dynamic headroom of 1,4 dB which means 38% extra power (above RMS) on sudden musical transients.
Our phono sections are just a s impressive. All have a very high Signal-to-Noise Ratio, which means that even quiet musical passages come through clearly.
Yet each can handle the high voltages generated by today's best records.
And when it comes to FM, all Technics rceivers include MOS FET's for high sensitivity and low noise. "Flat Group Delay" IF stages for clean signal processing. And phase-locked-loop circuitry for accurate stereo imagimg.
With the SA-404 and SA-505, you also get 10 LED peak-power indicators. And Acoustic Control that gives you more control over both the bass and treble frequencies than is possible with conventional tone controls.
Amplifier Section
Rated Power Output (minimum sine wave RMS):  50 W per channel into 8 Ω (20 Hz - 20 kHz both ch. Driven, 0,04% T.H.D.)
1 kHz Continuous Power Output (both ch. Driven 0,04% T.H.D.):
55 W per channel into 8 Ω
60 W per channel into 4 Ω
Dynamic Headroom:  1,4 dB 98 Ω)
Total Harmonic Distortion
Rated Power at 20 Hz - 20 kHz :  0,04% (8 Ω)
Half Power at 20 Hz - 20 kHz :  0,02% (8 Ω)
Hale power at 1 kHz :  0,009% (8 Ω)
SMPTE Intermodulation Distortion:  0,04% (8 Ω)
Frequency Response:
Phono :  RIAA standard curve +0,3 dB
Tuner, Aux, Tape :  7 Hz - 45 kHz -1 dB (20 Hz - 20 kHz ±0,2 dB)
Input Sensitivity:
Phono :  0,4 mV (2,5 mV, IHF'66)
Tape 1, 2 :  20 mV (150 mV, IHF'66)
Signal-to-Noise Ratio (IHF, A)
Phono :  73 dB (80 dB, IHF'66)
Tuner, Aux, Tape :  78 dB (95 dB, IHF'66)
Maximumm Input Voltage:
Phono :  120 mV (150 mV, 1 kHz)
Input Impedance
Phono :  47 k Ω
Tape 1, 2 :  27 k Ω
Tone Controls
Bass :  ±10 dB at 50 Hz
Treble ;  ±10 dB at 20 kHz
Acoustic Controls (at tone "0" position):
Low Boost :  100 Hz, +6 dB
High Boost :  10 kHz, +6 dB
Low Filter:  100 Hz, -6 dB/oct
High Filter :  7 kHz, -6 dB/oct
Loudness Control (volume at -30 dB):  50 Hz, +9 dB
Output Voltage
Rec Out :  150 mV
Low Frequency Damping Factor:  34 at 8 Ω; 17 at 4 Ω
Load Impedance
Main or Remote:  4- 16 Ω
Main and Remote :  8 - 16 Ω
FM Tuner Section
Frequency Range:  88 - 108 MHz
Sensitivity:  10,8 dBf (1,9 µV, IHF'58)
50 dB Quieting Sensitivity
Mono :  13,7 dBf (2,7 µV, IHF-58)
Stereo :  37,2 dBf (39,7 µV, IHF'58)
Total Harmonic Distortion
100 Hz :  0,15% (mono ); 0,3% (stereo)
1 kHz :  0,15% (mono): 0,3% (stereo)
6 kHz ;  0,3% (mono); 0,4% (stereo)
Signal-to-Noise ratio
Mono :  75 dB
Stereo :  70 dB
Frequency Response:  20 Hz - 15 kHz +1 dB, -2 dB
Alternate Channel Selectivity:  70 dB
Capture Ratio:  1,2 dB
Image Rejection (98 MHz):  60 dB
IF Rejection (98 MHz):  75 dB
Spurious Response Rejection (98 MHz):  82 dB
AM Suppression:  55 dB
Stereo Separation:
At 1 kHz :  45 dB
At 10 kHz :  35 dB
Carrier leak:
At 19 kHz :  -40 dB
At 38 kHz ;  -50 dB
Antenna Terminals :  300 Ω (balanced), 75 Ω (unbalanced)
AM Tuner Section
Frequency Range:  525 - 1605 kHz
Sensitvity:  30 µV, 300 µV/m
Selectivity:  30 dB
Image Rejection (1000 kHz):  50 dB
IF Rejection (1000 kHz):  40 dB
Power Supply/Consumption:  AC 120 V, 60 Hz  / 300 W, 345 VA
Dimensions (W x H x D):  480 x 160 x 293 mm (18-29/32" x 6-5/16" x 11-17/32")
Weight:  8,4 kg (18,5 lbs)

NHT model 2.3A loudspeakers

The critically - acclaimed 2.3A is NHT's premium tower loudspeaker.
Incorporating the components of our high-performance 1.3A bookshelf system together with two ultra-low resonance subwoofers, the 2.3A is renowned for its accuracy and precise imaging. Employing the finest components and materials available and engineered using advanced computer-aided design techniques, the 2.3A's performance rivals that of the most expensive systems. Capable of resolving subtle musical etail, the 2.3A produces a wide, 3-dimensional soundstage, while providing deep, controlled bass extension and outstanding dynamic range.
NHT 2.3a Specifications
Design:  3-way, 4 driver, acoustic suspension
HF :  1" soft-dome, fluid-cooled tweeter
MF :  6,5" high compliance, polypropelene woofer
LF :   2 x 6,5" long-throw, polypropelene woofers
Crossover:  3,1 kHz, 12 dB/oct (with damping compensation); 70 Hz, hybrid  6-12 dB/octave
Response:  35 Hz - 25,000 Hz ±3 dB
Sensitivity:  86 dB (2,83 V/m)
Impedance:  4 Ω nominal, (2,9 Ω minimum)
Power Handling:  200 W/ch max. (35 W/ch minimum)
Dimensions (W x H x D):  7" x 37" x 12" 
Weight:  42 lbs 9each)
Finish:  High gloss black laminate

NHT model 2.1 loudspeakers

NHT's Tower Loudspeakers represent a unique approach to 3-way design. By integrating the components and design principles of our critically acclaimed bookshelf speakers with a built-in subwoofer, our elegant tower models deliver the clarity and precision of the finest 2-way design along with the dynamic range and extended bass response of much larger loudspeaker systems. The uniquely angled cabinets are part of NHT's exclusive Focused Image Geometry technology, which controls radiation patterns and eliminates undesitable reflections providing measurably smoother frequency response, and assuring tonal neutrality and precise imaging.
NHT 2.1 Specifications
Design:  3-way, 4 driver, acoustic suspension
HF :  1" soft-dome, fluid-cooled tweeter
MF :  6,5" high compliance, mid-woofer
LF :   2 x 6,5" long-throw, polypropylene woofers
Crossover:  3,2 kHz, 6 dB/oct; 80 Hz, 6-12 dB/octave
Response:  40 Hz - 25,000 Hz ±3 dB
Sensitivity:  87 dB (2,83 V/m)
Impedance:  8 Ω nominal, (3,2 Ω minimum)
Power Handling:  200 W/ch max. (35 W/ch minimum)
Dimensions (W x H x D):  7" x 34" x 12" 
Weight:  31 lbs 9each)
Finish:  High gloss black laminate

Mission 70 loudspeakers

The Mission 70's innovative design results in a unique wide bandwidth system, free of unwanted resonances, distortions, frequency response anomalies, and colorations - remarkable for a loudspeaker in its size and price category.
The 70 is designed wiat an unusual cabinet construction. The drive units are mounted on Mission rigid particle baffle board while the carcass consists of a sandwich construction to distribute and dampen enclosure resonances. Carefully optimised drive units ensure the smooth bass performance essential in high quality system. The driver geometry is inverted in Mission's novel style. This combines with elegantly simple crossover networks to enhance phase coherence and produce an astonishing three - dimensional stereo stage.
Technically the frequency response is unusually smooth and well balanced. Whereas the competition has an irregular response often as poor ±5 dB the 70 measures flat to within ±2 dB. When measured off axis it exhibits no mid-band cancellations. The modulus of impedance is very smooth, remaining above 6 Ω and with minimal electrical phase angles.
The ensures that the speaker presents an easy load to amplifiers. Harmonic distortions are minimised even at low frequencies, and sensitivity high sound pressure levels even with modest amplifiers.
Recommended Amplifer Power:  20 - 60 W/ch
Frequency Response:  60 Hz - 20 kHz ±3 dB
Sensitivity (ref. 2,83 V/1 m):  90 dB
Nominal Impedance:  6 Ω
Crossover Frequency:  3,400 Hz
HF Unit:  19 mm Polymer dome
LF Unit:  177 mm Plastiflexed cone
Terminals: 4 mm plug/wire
Dimensions (W x H x D):  210 x 350 x 210 mm
Weight:  10 kg

Cyrus Tuner mkI

The advent of digitally synthesised tuners has substantially improved the reception quality of FM broadcasts. A few problems however continue to persist in the design of most Fm tuners. The most serious of these problems we consider to be sibilance in high frequencies and poor low-frequency performance. It is common knowledge that the low-frequency performance of tuners lacks authority, control, definition, and articulation - especially when compared to the latest generation CD players.
The objectives of Cyrus Electronics have been to produce an outstanding tuner where the FM section does not suffer the nagging problem of "spitting" sibilance, and to give bass notes their rightful and necessary musical weight, tempo, and authority. The Cyrus Tuner is manufactured in a case of identical dimensions and appearance to the rest of the Cyrus range, and will suit the requirements of the perfectionist audiophile who owns either a Cyrus One or a Cyrus Two.
The design is based on microprocessor controlled digital frequency synthesised tuning,, and provides 19 FM and 9 MW preset with C-MOS memory back-up. The unit provides variable speed up/down scanning, automatic search, as well as manual tuning. Automatic FM mute is provided to eliminate irritating interstation noise. Quartz-locked tuning system is adopted for ultimate tuning accuracy and minimal frequency drift. An informative Fluorescent Tube Display electronically generates digital frequency readout, "Tuning " indication, "Stereo" reception and, when selected, preset channel number. For finest reception quality under adverse signal conditions the Cyrus Tuner has FET front-ends (dual-gate with automatic gain control on FM). The FM mixer oscillator is buffered to ensure high immunity to interference, and Ceramic filters are incorporated for high selectivity on both AM and FM wavebands. The Cyrus Tuner offers "Sliding Stereo" decoder maintaining full channel separation on strong signals, and changing gradually to mono for fullest noise suppression on weak signals. PLL decoder circuitry produces a stable audio signal with optimum channel separation, and an SISC filter cuts out interference on stereo broadcasts.

FM Section
Frequency Range:  87,5 - 108 MHz
Frequency Response:  20 Hz - 15 kHz ±1 dB
Audio Output:  1 V RMS
Sensitivity (75 Ω input)
Mono :  0,8 µV (26 dB s'n)
Stereo ;  18 µV (46 dB s'n)
Selectivity:  72 dB
IF Suppression:  100 dB
Image Frequency Suppression:  57 dB
Pilot Tone Suppression:  43 dB
Stereo Separation (1 kHz):  36 dB
Signal-to-Noise Ratio
Mono :  73 dB
Stereo :  71 dB
Total Harmonic Distortion
Mono :  0,15%
Stereo ;  0,4%
Aerial Input:  75 Ω coaxial
AM Section
Frequency Range:  513 - 1611 kHz (186 - 584 m)
Audio Output:  0,3V RMS
Sensitivity:  130 µV (26 dB s'n)
Selectivity:  58 dB
MF Suppression 52 dB
Image Frequency Suppression:  58 db
Aerial Input:  External loop Aerial and External Connection Socket
Dimensions (W x H x D):  215 x 85 x 340 mm
Weight: 2 kg

Cyrus One amplifier

The Cyrus One is based on a revolutionary circuit design philosophy, details of which are beyond the scope of this blog and in any case well guarded secrets. The design is then implemented with careful attention to circuit topology in order to minimise the number of components in the signal path and reduce their harmful effects. This 'straight-line" design is then manufactured to the very highest standards using components and materials beyond the reach of most competition. The power transistors, for example, are military grade, ultra-fast and very linear devices especially manufactured for Cyrus Electronics. The driver transistors are equally products of a British military semiconductor manufacturer. World class german produced passive components have been selected including extravagant polypropylene capacitors, polystyrene capacitors, and metal film resistors. The casing for the amplifier is precision injection moulded from a "non-magnetic", "non-electroconductive" metal substitute produced by Space Division of American General Electric.
All spurious and harmful stages, such as tone-controls and filters, headphone and loudspeaker switching, protection circuits and balance controls have been eliminated to make the amplifier a "straight-line", no compromise, state-of-the-art. Design. The quality control standards are amongst the highest in the industry where every amplifier is tested along nearly 100 parameters on the most sophisticated hewlett-packard CAD-CAM systems available. The result is an extraordinary achievement called the Cyrus One integrated amplifier, elegant in appearance, without gimmicks, and capable of producing a breathtaking and spectacular sound stage when used with quality ancillary equipment.
Power Amp. Section
Continuous Average Power: 
30 watts per channel both driven into 8 Ω
40 watts per channel both driven into 4 Ω
Current Delivery:
10 amps RMS continuous
40 amps peak to peak instantaneous
Damping Factor;  100 (20 Hz - 20 kHz)
Dynamic Headroom:  1,4 dB
Slew Factor:  10 (input filter by-passed)
Full Power into 8 Ω 0,004% :  (1 kHz); 0,01% (20 kHz)
Full Power into 4 Ω :  0,005% (1 kHz); 0,015% (20 kHz)
Preamp Section
Input Sensitivity
Phono MC :  0,04 mV
Phono MM :  0,400 mV
Line :  65 mV
Input Overload (1 kHz)
Phono MC :  27 dB
Phono MM :  27 dB
 line ;  Infinite
Maximum Output Level
Tape Out :  11 V RMS
Power Amp :  17 v RMS
Input Impedance
Phono MC :  47 k Ω  +100pF
Phono MM :  47 k Ω +100pF
Line :  14 k Ω
Output Impedance
Tape Out :  10 Ω +2,2 µF
Power Amp :  0,08 Ω
Frequency Response :
Phono (ref. New RIAA) :  20 Hz - 20 kHz ±0,2 dB
Line :  1 Hz - 55 kHz -3 dB points
Total Harmonic Distortion
Phono MC :  0,02%
Phono MM :  0,005%
Line :  0,004%
Distortion (SMPTE IMD)
Phono MC :  0,02%
Phono MM :  0,005%
Line :  0,005%
Signal-to-Noise Ratio (A-weighted at 1 W):
Phono MC :  66 dB
Phono MM :  82 dB
Line :  86 dB
General Section
Dimensions (W x H x D):  215 x 85 x 340 mm
Weight:  4 kg

Marantz 1122DC amplifier

Stereo Console Amplifier Features:
Low TIM Design
DC Amplifier
Bas, Midrange and Treble Controls
Low and High Filters
Full Complementary Direct Coupled Output
Two Tape Monitors
Tape Copy Facilities

Shown in optional walnut veneer cabinet 
Technical Specifications
Amplifier Section
Rated Power Output (Min. Contiuous Average Power per Channel, both Channel Driven):  61 W (Power band:  20 Hz to 20 kHz; Total Harmonic Distortion:  0,03%; Load Impedance:  8 Ω)
Rated Power Output (Min. Contiuous Average Power per Channel, both Channel Driven):  77 W (Power band:  20 Hz to 20 kHz; Total Harmonic Distortion:  0,09%; Load Impedance:  4 Ω)
IM Distortion (IHF method, 60 Hz and 7 kHz mixed 4 : 1 rated power output)
At 8 Ω Load Impedance :  0,03%
At 4 Ω Load Impedance ;  0,09%
Damping Factor (at 20 Hz):  60
Sensitivity (at Main In):  1,5 V
Impedance (at Main In):  30 k Ω
Frequency Response (power Amp Only):  20 Hz to 20 kHz ±0,2 dB (at 1 watt output)
Signal-to-Noise Ratio (Main In "A" weighted):  110 dB
Preamplifier Section
Input Overload at 1 kHz:  200 mV
Equivalent Input Noise ("A" weighted):  0,48 µV
Dynamic Range:  109 dB
Input Sensitivity:  1,8 mV
Input Impedance:  47 k Ω
Frequency Response (RIAA 20 zh to 20 kHz):  ±0,3 dB
Signal-to-Noise Ratio ("A" weighted, at rated output and 7,75 mV input):  83 dB
High Level (Aux and Tape)
Input Sensitivity:  180 mV
Input Impedance:  20 k Ω
Frequency Response (includes power amp.):  5 Hz - 60 kHz ±0,1 dB
Signal-to-Noise Ratio ("A" weighted; ref.to rated output and 775 mV input):  93 dB
Output levels
Tape Out (ref. 7,75 mV at phono input):  775 mV
Pre Out (ref. 180 mV at Aux inputs):  1,5 V
(ref. 500 mV at Aux inputs, main amp disconnected):  4,2 V
Output Impedance
Tape Out :  330 Ω
Pre Out :  220 Ω
Power Requirements (USA only):  120 V AC, 60 Hz
Power Consumption (at rated output, both channels operating):  250 watts
Idling Power (Volume Control at zero):  50 watts
Dimensions (W x H x D):  416 x 146 x 312 mm (16-3/8" x 5-3/4' x 12-3/8")
Weight (Unit alone):  12,5 kg (27,5 lbs)

Sony ST-2950SD tuner

FET front-end
New,computer-designed uni-phase IF filters
Phase-Locked-Loop IC stereo MPX stage
Dolby noise reduction system for decoding Dolbyized FM broadcasts, and Dolby Indicator light.
Center station and signal strength tuning meters
Smooth flywheel tuning action
Wide, frequency linear dial calibrastion
FM interstation muting
FM discriminator output for future 4-channel FM
High blend switch
Automatic mono/stereo switching, and stereo indicator light
Wooden side panels included

Sony's new ST-2950SD tuner is priced in the udget range, but is built with advanced electronics that mean high performance. For a very modest expenditure, FM listeners can enjoy the quality sound of the ST-2950SD, as well as the convenience of a built-in Dolby decoding system for FM.
FM Section
The unit's FM front-end electronics, with FET desoign, yield high sensitivity and a high interference rejection capabaility.
The intermediate frequency stage
utilizes Sony's new uni-phase (F filters, providing high selectivity and, at the same time low audio distortion.
And for excellent FM stereo, the multiplex stageis  built with a Phase-Locked- Loop IC, providing low distortion decoding and high stereo separation.
At least 35 dB of separation is maintained at high and low ends of the frequency spectrum, while 40 dB is achieved at midrange frequencies.
Overal FM performance rating include a capture ratio of 1,0 dB, an S/N Ratio of almost 70 dB in stereo and more than acceptably good distortion figures.
For listeners who want an uncomplicated means of taking advantage of Dolbyized FM programs, the ST-2950 SD provides simple, one-step decoding.  When stations send out Dolbyized broadcasts,
all that's required for decoding is to press the unit's Dolby button - no need to use an-add on noise reduction unit, and no need to be concerned about changing FM de-emphasis.

AM Section
A triple AM AGC circuit is just  one aspect of AM design that makes the ST-2950SD produce far etter than everage AM-only programs without the usual levels of irritating interference. 
Tuning the ST-2950SD is simple and accurate, with ultra-smooth flywheel tuning action, frequency linear dial calibration and highly readable tuning meters to help zero in on the station. FM interstation muting cuts out noise, and a clea, human-engineered front panel provides ease of use - in both tuning and control.

FM Tuner Section
Antenna Terminals:  300 Ω (balanced), 75 Ω (unbalanced)
Usable Sensitivity (IHF '58):  2,0 µV
50 dB Quieting Sensitivity:
Mono :  4,0 µV
Stereo :  50 µV
Signal-to-Noise Ratio:
Mono :  73 dB
Stereo :  68 dB
Capture Ratio:  1,0 dB
Selectivity:  50 dB
Image Rejection:  45 dB
IF Rejection:  90 dB
Spurious Rejection:  75 dB
AM Suppression:  54 dB
Total Harmonic Distortion:
Mono :
At 100 Hz :  0,2%
At 1 kHz :  0,2%
At 10 kHz :  0,2%
At 100 Hz :  0,3%
At 1 kHz :  0,3%
At 10 kHz :  0,6%
IM Distortion:
Mono :  0,2%
Stereo :  0,3%
Frequency Response:  30 Hz - 15 kHz (+0.5 -1,5 dB)
Stereo Separation:
At 100 Hz :  35 dB
At 1 kHz :  40 dB
At 10 kHz :  35 dB
RF Intermodulation:  60 dB
Subcarrier Product Ratio:  60 dB
SCA Suppression:  60 dB
AM Tuner Section
Antenna:  Built-in ferrite bar antenna w/terminal for ext. Wire
Sensitivity:  250 µV/m (w/built-in antenna); 100 µV (w/ext.antenna)
Selectivity:  35 dB at 10 kHz
Signal-to-Noise Ratio:  50 dB at 50 mV/m
Image Rejection:  40 dB at 1,000 kHz
Total Harmonic Distortion:  0,5% at 50 mV/m, 400 Hz
General Section
Output Level/Impedance (at 100% modulation)
Audio (Fixed):  750 mV/5 k Ω
Discriminator:  150 mV/2,5 k Ω
Semiconductors:  4 ICs, 1 FET, 17 Transistors, 14 Diodes
Power Requirement:  AC 120V, 220, 240 V 50/60 Hz
Power Consumption:  26 W
Dimensions (W x H x D):  390 x 145 x 310 mm (15-3/8" x 5-3/4" x 12-1/4")
Weight:  6 kg (13 lbs 4 oz)

Pioneer RT-1011L reel-to-reel deck

Pioneer RT-1011L
Pioneer's engineering policy assures reliable operation and quality performance from the new RT-1011L 4-track stereo tape deck.
A thick 5 mm front suspension panel and solid,  die-cast framework provide extra strength margin for the 10-1/2 inch reel load and stable tape transport system.
Wow and flutter is reduced by the precision 4/8-pole hysteresis synchronous capstan drive motor, coupled with a "tuned" 100 mm flywheel and high-precision 0,2 µ-error capstan.
A high-torque 6-pole induction motor ensures optimum tape tension. The 2-channel 4-track recording and playback heads are hyperbolic for superb tonal quality, ideal head-to-tape contact, and exhibit excellent
electromagnetic characteristics. All three heads are arranged in a short tape path to enhance stability. And Pioneer's long experience in tape deck design means top versatility. the RT-1011L includes
switched circuits for 2-step bias and 2-step equalization for balanced recordings with any tape. Advanced design and electronics also means wide dynamic range from the mic/line mixing, solenoid-operated
direct-changeable function  buttons, auto record facility for use with pre-set timer. large level meters, lockable pause, and more.
Operation:  3-motor, 3-head system, 4-track 2-channel recording, 4-track 2-channel playback
1 x playback head
1 x recording head
1 x erase head
2 x For Reel :  6-pole iner rotor induction motor
1 x For Capstan :  4/8-pole hysteresis synchronous motor
Tape Speeds:  19 cm/s (7-1/2 ips); 9,5 cm/s (3-3/4 ips)
High Speed Wind Times:
10-1/2" Reel :  110 sec at 740 m (2400 feet) tape
7" Reel :  90 sec at 370 m (1200 feet) tape
Wow and Flutter:
19 cm/s :  0,08% WRMS
9,5 cm/s :  0,10% WRMS
Signal-to-Noise Ratio:  more than 55 dB
Distortion:  less than 55 dB
Frequency Response:
19 cm/s :  40 Hz to 20,000 Hz (±3 dB)
9,5 cm/s :  40 Hz to 12,000 Hz (±3 dB)
Crosstalk:  more than 60 dB
Stereo Channel Separation:  more than 50 dB
Erase Ratio:  more than 60 dB
Recording Bias Frequemcy:  125 kHz
Inputs Sensitivity/Impedance:
Microphone :  0,25 - 80 mV/ 20 k   (1 mV ref.)
Line :  50 mV - 25 V/ 100 k   (316 mV ref.)
DIN :  15 mV - 1,5 V/ 1,5 k  
Outputs :
Line :  316 mV/50 k  load at 0 VU (Output impedance less than 10 )
DIN :  316 mV/50 k  load at 0 VU (Output impedance less than 10 )
Headphone :  40 mV/ 8   at 0 VU (Load Impedance 4 to 16 )
Power Requirements:  AC 120 V 60 Hz
Power Consumption:  115 W
Dimensions (W x H x D):  428 x 431 x 227 mm (16-27/32" x 17" x 8-15/16")
Weight:  18,6 kg (41 lbs)