For Sale: Classic mid 1980's stereo receiver in mint or near mint shape.
Works 100%, no issues. Excellent sound quality. Just cleaned all the switches and pots with electronic contact cleaner spray so no static or scratchiness when adjusted. Has all the standard receiver features plus an adjustable IMX Stereo Expander (impressive sound), a low filter, high filter, dual five segment LED real time power meters, and more. Large and heavy power supply and big aluminum heat sink fins for the power transistors. Gets excellent FM stereo and AM reception, has built in "power line" antenna option. All backlights, function indicator lights, and stereo indicator light are working correctly. Tested both CD/Aux and Phono inputs- all good.
Specs from the web:
STA-870 Solid State AM/FM Stereo Receiver
(310-3001) Specifications Faxback Doc. # 31146
Pre-Amplifier and Amplifier
Audio Output power at no more than: ................. 65 watts per channel
0.08% Total Harmonic Distortion into (Minimum RMS Power,
8 Ohms, over the audio spectrum, 20 Both Channels Driven).
to 20,000 Hz.
Frequency Response (15 - 25,000 Hz): ............................. +/-1 dB
Sensitivity (for rated output):
PHONO: ........................................................ 2.2 mV
CD-AUX/TV-AUX/TAPE IN: ........................................ 150 mV
Tape Output Level:
Phono: ........................................................ 140 mV
CD-AUX/TV-AUX: ................................................ 140 mV
Tone Control Action:
Bass at 100 Hz: ............................................. +/-10 dB
Treble at 10 kHz: ........................................... +/-10 dB
Signal-to-Noise Ratio:
Phono: ......................................................... 86 dB
CD-AUX/TV-AUX/TAPE IN: ......................................... 92 dB
Loudness Compensation (-30 dB Volume Position):
at 100 Hz: .................................................... + 6 dB
at 10 kHz: .................................................. + 4.5 dB
High-Filter: ..................................... 6 dB/octave above 6 kHz
Subsonic Filter(with Bass max.): ........................... 7 dB at 10 Hz
Expander Level Ratio at main ch.:
Expander VR Max: ......................................... L ch 7.0 dB
R ch 8.2 dB
Expander VR Min: ......................................... L ch 3.2 dB
R ch 4.5 dB
Expander Noise Level with Expander VR Max: .......................... 2 mV
FM TUNER:
Sensitivity (IHF): ................................. 1.9 microV (10.8 dBf)
Signal-to-Noise Ratio (1 mV): ...................................... 72 dB
Limiting Sensitivity (-3 dB): ................................. 1.5 microV
Image Rejection: ................................................... 60 dB
Capture Ratio: .................................................... 1.5 dB
Harmonic Distortion:
Mono: ........................................................... 0.1%
Stereo: ......................................................... 0.2%
IF Rejection: ...................................................... 90 dB
ACA: ............................................................... 53 dB
AM Suppression: .................................................... 58 dB
Stereo Separation (1 kHz): ......................................... 48 dB
AM TUNER:
Usable Sensitivity (for 20 dB SN ): ......................... 250 microV/m
Distortion (5 mV/m): ................................................ 0.8%
Signal-to-Noise Ratio (5 mV/m): .................................... 43 dB
Selectivity: ....................................................... 28 dB
Image Rejection: ................................................... 45 dB
IF Rejection: ...................................................... 35 dB
AGC Figure of Merit: ............................................... 50 dB
RF Interference Rejection: ............................... Rated excellent
Overall Dimensions (HWD): ................. 4-3/4 x 18-1/2 x 10-1/2 Inches
(120 x 470 x 270 mm)
ANTENNAS:
AM: .......... Built-in ferrite antenna plus terminal for external antenna
FM: ........................ Line cord plus terminals for external antenna
Power Requirements:
U.S.A.: ............................... 120 VAC, 60 Hz (450 Watts Max)
Email for additional/higher resolution photos.
Send your zip code for ship cost - it should be between $12.99 and $29.99 if you are in the continental USA (listed April 2014).