Onkyo P-303, Preamplifier

1977+

Manufacturer: Onkyo, Japan
Form Stereo preamplifier
Input sensitivity/impedance Phono MC (50ohm drive): 100 microvolt/10 ohm
Phono man month: 2.5mV / 30kohm, 50kohm, 100kohm
Tuner, Tape play:150mV /, 50kohm
Accessory-Rcv: 1.5V/82kohm
An Output power/impedance Tape rec(Phono): 150mV / 12kohm
Accessory-Send: 1.5V/100 ohm
Output: 1.5V (a maximum of 15V) / 600ohm
Phono maximum permissible input (THD 0.05%)
MC: 13mV(1kHz)
63mV(10kHz)
MM: 330mV(1kHz)
1600mV(10kHz)
Frequency characteristic Phono man month(RIAA deflection): 20Hz-20kHz±0.2dB
Tuner and Tape:3.5Hz-200kHz+0 -1.5 dB
THD (at the time of 3V output)
20Hz - 20kHz Phono MC: 0.03% or less
Phono man month: 0.006% or less
Cross modulation distortion (at the time of an Output power) 0.01% or less (SMPTE 70Hz:7kHz=4:1)
SN ratio (IHF-A network) Phono MC: 70dB (50ohms of inputs)
Phono man month: 83dB (input shunt)
Tuner, Tape: 100dB (input shunt)
Input/output polarity Phono MC: Negative phase
Phono man month: Inphase
Tuner, Tape, Acc-Rcv: Inphase
The semiconductor used Transistor: 52 pieces
Diode: 29 pieces
AC output switched: Three lines
unswitched: One line
Total:1100VA
Power source AC100V, 50Hz/60Hz
Power consumption 20W (Electrical Appliance and Material Control Law specification)
Retail price in Germany in 1980 was: 1200,- DM
Dimensions Width 450x height 83x depth of 370mm
Weight 7.5kg


ONKYO Integra U-30
1977+

Form System unit
Selector Phono: Three lines
Tuner (Aux): Three lines
Tape monitor 1, 2, Source
Rec mode 1->2, 2->1, Rec, off
Pre out 1, 2, 1&2, off
Mode stereo (normal, reverse)
mono (L+R, L, R)
Speakers 1, 2, 1&2, off
Meter selector SP (speaker output peek power meter)
Pre out (preamplifier Output voltage)
Dimensions Width 450x height 83x depth of 360mm
Weight 6kg

źródło: audio-database.com