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DYNACO PAT-4A

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Technic details

Specifications

Type:
Solid-state Stereo Preamplifier
[Frequency characteristics]
AUX: 10Hz to 100kHz, ±0.5dB
Phono: 20Hz to 20kHz, ±1dB
Total harmonic distortion:
0.05% or less (2V output, 20Hz to 20kHz)
Intermodulation distortion rate:
0.05% or less
[S / N ratio]
Phono: 70dB (10mV input)
AUX: 85dB (0.5V input)
[Gain]
Phono: 54dB (1kHz)
High level: 20dB
Maximum output:
10V (Hi impedance)
5V (600Ω)
[Input impedance]
Phono: 47kΩ
Tape head, High level: 100kΩ
[Output impedance]
Audio Output: 600Ω
To Tape: 600Ω (From low-level inputs)
Input terminals:
Phono (High, Ceramic, Low), Tape head, Special, Tuner, Spare, Tape Amp
Output terminal:
Output-1 and Output-2 (To Amplifier), To Tape
Front panel output
For tape recording
[Tone control]
Bass: ±16dB (50Hz)
Treble: ±12dB (10kHz)
High Filter switch: 15kHz, 10kHz, 7kHz
Semiconductors used:
Transistors x 8 pieces
Diodes x 2 pieces
Optional:
PAT-4 / PAS-3X common wooden case (￥ 3,900, around 1970)
AC Outlets:
2 x Unswitched (300W Total)
2 x Switched (300W Total)
Power requirements:
AC 120V, 50 / 60Hz
Power consumption:
5W
External dimensions (W x H x D):
345 x 105 x 205mm
Weight:
4.5kg

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