ONKYO GRAND INTEGRA P-308 PREAMPLIFIER
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ONKYO GRAND INTEGRA P-308 PREAMPLIFIER Picture and Description:
ONKYO GRAND INTEGRA P-308 CONTROL AMPLIFIER / PREAMPLIFIER The Onkyo Grand Integra P-308 was introduced in 1986 with a production run until 1991 . As its name suggest the P-308 is indeed “grand”, in design, build quality, flexibility, and above all performance. It was built with a design philosophy that guarantees absolute sonic purity of the sound stream regardless of the input source. Distortion levels are typically under 0.0005% . Integra engineers pulled out all the stops, thus the P-308 can handle any source component, modern or vintage, and do so at a level of sonic fidelity few preamps can. Some of its may features and functions include 8 Source Component Inputs CD, Phono, Tuner, Line 1, Line 2 , Tape 1, Tape 2, Tape 3 Contra Bass EQ Direct Tone Passive Equalization MM & MC Phono Cartridge Accommodations with optimal impedance settings for virtually all cartridges Variable Output Level Controls In-Phase Signal Coupling. Onkyo’s In-Phase transformer is placed between the power transformer and the capacitors. It prevents phase shift between the voltage and current in the preamp-to-speaker path that can cause poor stereo imaging and diminish bass response Discrete Signal Path Circuitry Switchable Voltage. Specifications Harmonic Distortion (T.H.D, 20Hz~20kHz and output voltage: 3V and Vol-30dB) Phono (MC): 0.003% or less Phono (MM): 0.0008% or less CD, Tuner, Line and Tape: 0.0005% or less Cross Modulation Distortion 0.003% or less (at the time of rated output SMTPE 70Hz: 7kHz=4: 1) Signal-to-Noise Ratio (IHF-A, short circuit) Phono (MC): 76dB (320?V) Phono (MM): 90dB (5mV) CD, Tuner, Line and Tape: 106dB Input Sensitivity/ImpedancePhono (MC): 0.16mV/100 and 220 Phono (MM): 2.5mV/47k and 100k CD, Tuner and Line1, 2, Tape1, 2 and 3: 150mV/20k Output Sensitivity/Impedance Rec Out: 0.15V/560 Pre Out: 1V (maximum 6V) /160 Gold plated terminals Filter High: 7kHz-6dB/oct Tone control Bass: 20Hz±10dB Treble: 20kHz±8dB Bass Selector: 450Hz/200Hz Power source120 & 220 50/60Hz Dimensions Wide: 18 3/8” Height: 4” Depth: 16” Weight19 lbs Beautiful preamplifier, excelent cosmetics - only some scratches on top rear left wood panel. Works flawlessly. Excellent match with Onkyo Power Amplifier M-508 - see my other listings.