STATUS - SOLD
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Description :
The Integra P-308 sports a Subsonic Feedback Loop between its inputs and outputs to cancel spurios DC, ELF (no Jenna Elfman here, alas, only Extremely Low Frequency) signal components along DC drift and intermodulation distortion - without using coupling caps. Cardans are set inside to keep short signal paths, and regulated, separate, trafo windings feed each block independently : phono EQ, linear gain, headphone. Eight inputs are available, with two dedicated to Phono MM cartridges or Phono MC cartridges, each with two-position trims. A contra-bass switch is added for those in need of more (light) guts down below - but only at 200Hz. The export models had the Line 2 inputs located front, below the attenuator - strange move. The Tape 1 button was however (worldwide) labeled D.A.T. - Onkyo was one year ahead. Albeit adorned with many a dispensable function, build-quality of the P-308 is tremendously clean.

Specifications :
Input sensitivity/impedance...................Phono MC: 160 microvolts/100ohm, 220ohm
                                      ....................Phono man month: 2.5mV / 47kohm, 100kohm
                                      ....................compact disk, Tuner, Line, Tape play:150mV /, 20kohm
An Output-power voltage / impedance....Tape rec: 150mV/560 ohm
                                      ....................Output: 1V, 6V (maxima)/160ohm
Phono maximum permissible input
(THD0.05%, 1kHz)..............................MC:13mV
                          ...............................MM:210mV
Frequency characteristic.....................MC: 4Hz-150kHz+0.2 -3dB
                                   ......................man-month: 1.8Hz-170kHz+0.2 -3dB 
                                   ......................compact disk, Tuner, Line, and Tape:0.8Hz-170kHz+0 -3 dB
THD (20Hz - 20kHz)
3V output, Vol-30dB...........................MC: 0.003% or less
                            ............................man month: 0.0008% or less 
                             ...........................compact disk, Tuner, Line, Tape: 0.0005% or less
Cross modulation distortion................(at the time of an Output power) 0.003% or less (SMPTE, 70Hz:7kHz=4:1)
SN ratio (IHF-A filter)
Input short-circuit...............................MC: 76dB (320 microvolts)
                        ................................MM:90dB(5mV)
                        ................................compact disk, Tuner, Line, Tape: 106dB
Tone control (Vol-20dB) Bass.............±10dB (20Hz)
Bass Selector Bass...........................450Hz(Boost/Cut)
ContraBass.......................................200Hz(Boost)
Treble...............................................±8dB (20kHz)
Filter High.........................................7kHz, 6dB / oct
Transient killer operating time..............Power on : 7sec
                                           ..............Power off :100msec
AC outlet Power-switch interlock.........Two lines, a total of 800W
Power-switch un-interlocking..............One line, 200W
Power source....................................AC220V, 50Hz/60Hz
Power consumption...........................27W (Electrical Appliance and Material Control Law)
Dimensions(w x d x h).......................47 x 40 x 10 cm
Weight.............................................9 kg

Miscellaneous :
Matching..........................................Onkyo M-508 Power Amplifier
Made in...........................................Japan
Condition..........................................7 / 10

Product information :
http://audio-database.com/ONKYO/amp/integrap-308-e.html
http://www.thevintageknob.org/THEVAULT2/P308M508/P308M508.html