Integrated Stereo Amplifier
The Sony TA-F5A integrated amplifier is designed for listeners who appreciate excellent sound. And an unusual degree of operating convenience.
Preamplifier/Control Section
The F5A incorporates a newly-designed phono EQ amplifier for low-noise, wide-dynamic-range reproduction. The direct coupled amp, together with an FET/DC negative-feedback circuit, maintains high operating stability. In addition, special capacitors, made of polypropylene film, are employed in the NF-network to ensure ultra-low distortion with voltage increase. Overall results include RIAA equalization accuracy within ±0,2 dB.
An equivalent level of accuracy is provided by the F5A's sophisticated features. Which include a four-gang stepped-attenuator volume control - with 41 detent steps - for accurate level adjustment, with no tracking error between channels. Negative-feedback, stepped-attenuator bass and treble controls are provided for precise frequency contouring; with mid-point "defeat" positions that allow absolutely flat response. There's also a high filter plus a sub-sonic filter that cuts low-frequency components below 15 Hz.
Connections for tuner, turntable, auxiliary source and two tape decks allow truly versatile system functioning. And tape monitor/dubbing facilities let you listen to all program sources during the dubbing process.
Power Amplifier Section
The direct-coupled DC power amplifier section utilizes a new monolithic IC for its dual-FET input stage. This is followed by a Class B driver stage and single-ended push-pull final stage. In itself, this amplifier design yields wide-band response, low distortion, high phase linearity and excellent transient response. But performance is improved even further through the Sony PPS system.
Pulse Power Supply - PPS
The advanced new PPS system reduces voltage fluctuations to 7% or less, vs the 15% of conventional amplifiers. And this means minimal stereo channel interaction through the power-supply circuit. Instead of going directly through a transformer and then on to rectifiers, with PPS, the incoming AC 120 V, 60 Hz line current is first rectified. The rectified current then drives a DC-to-DC converter, which operates at 20 kHz, instead of he usually 60 Hz. The 20 kHz frequency means the PPS transformer can be small efficient, since the high frequency requires fewer transformer windings. This in turn, means less DC resistance within the windings. With less resistance, there's less voltage drop with increasing power demands. Which results in better power performance - especially with low-frequency transients. And since the PPS never handles 60 Hz line frequency, hum is virtually eliminated.
For accurate power monitoring, the F5A features two large meters, which indicate output levels in watts per channel - from 0,01 to 100 watts. Other advanced amplifier features include large, cast aluminum heat sinks for cool operation, plus comprehensive amplifier/speaker protection circuits.
Features:
Direct-coupled DC power amplifier section , with newly developed monolithic IC and true-complementary symmetry, single-ended push-pull output stage
Sony Pulse Power Supply (PPS) assures high operating stability, minimal power-supply interaction - for low noise and distortion, excellent transient response.
Newly-designed, direct coupled phono EQ amplifier, with DC negative-feedback for high stability.
Connections for tuner, phono, auxiliary source, 2 tape decks
Tape monitor/dubbing facilities for 2 decks, with provision for listening to all program sources - including tape - during the dubbing process.
Professional-quality, stepped-attenuator volume control
Negative-feedback, stepped-attenuator bass and treble controls, with defeat position for absolutely flat response with tone controls switched out of the circuit.
Large, easy-to-read power meters for accurate power-output level monitoring, as well as easy channel balancing
High filter and sub-sonic filter
Illuminated, pushbutton input selectors for convenient program-source selection
Rugged, cast aluminum heat sinks for cool operation
Advanced amplifier/speaker protection circuitry.
Connections for 2 pairs of speakers
Wooden side panels included
Specifications
Power Amplifier Section
Continuous Power Output (RMS):
70 watts per channel, minimum RMS at 8 Ω from 20 Hz to 20 kHz with no more than 0,04% T.H.D.
Total Harmonic Distortion: 0,04% at rated output
Intermodulation Distortion: 0,01% at rated output
Frequency Response: 3 Hz - 70,000 Hz +) dB, -1 dB
Damping Factor: 40 at 8 Ω
Signal-to-Noise Ratio (A weighted): 100 dB
Headphone Output: 20 mW (at 8 Ω )
Preamplification Section
Input Sensitivity/Impedance
Phono : 2,5 mV/ 50 k Ω
Tuner, Aux, Tape 1, 2 : 150 mV/50 k Ω
Maximum Input Capability (1 kHz):
Phono : 250 mV
Output Level/Impedance
Rec. Out 1, 2 : 150 mV/4,7 K Ω
Total Harmonic Distortion : 0,02%
Intermodulation Distortion (60 Hz : 7 kHz = 4 : 1): 0,008%
Frequency Response
Phono : RIAA ±0,2 dB
Tuner, Aux, Tape 1, 2 : 3 Hz - 70,000 Hz +0, -1 dB
Tone Control Range
Bass : ±10 dB at 60 Hz
Treble : ±10 dB at 25 kHz
Filters
High : 6 dB/oct. Above 9 kHz
Low ; 6 dB/oct. Below 15 Hz
Signal-to-Noise Ratio (A-weighted)
Phono (re. 2,5 mV input) : 85 dB
Tuner, Aux, Tape 1, 2 : (re. 150 mV input) : 100 dB
General
Semiconductors: 4 ICs; 2 FETs; 42 Transistors; 36 Diodes
Power Requirements: AC 120V, 60 Hz
Power Consumption: 125 W
AC Outlets: 2 switched (100 W total); 1 unswitched (50 W max)
Dimensions (W x H x D): 17-1/8" x 5-3/4" x 14-5/8"
Weight: 18 lbs 1 oz