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HEATHKIT WA-P2

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Technic details

Specifications

Type:
Tube Pre Amplifier
Inputs:
3 x High-level (Input 1, 2, Tuner)
2 x Low-level (Phono, MIC)
Individual level controls for each
Input Sensitivity / Impedance:
0.1V or higher / 0.5MΩ (Input 1, 2, Tuner)
0.1V or lower / 22kΩ (Phono)
0.1V or lower / 2.2MΩ (MIC)
Outputs:
2 x Outputs
Output Level / Impedance:
0 to 2.5V RMS / 200kΩ
[Gain]
High-level inputs:
0.05V input produces 0.5V RMS output
0.09V input produces 1V RMS output
0.14V input produces 1.5V RMS output
0.18V input produces 2V RMS output
0.23V input produces 2.5V RMS output
Low-level inputs:
1.4mV input produces 0.5V RMS output
2.5mV input produces 1V RMS output
3.6mV input produces 1.5V RMS output
4.9mV input produces 2V RMS output
6.2mV input produces 2.5V RMS output
Frequency Response:
25Hz to 30kHz, ±1dB
15Hz to 35kHz, ±1.5dB
[Harmonic Distortion (At 2.5V RMS output)]
0.5V at Tuner:
0.63% (20Hz)
0.17% (1kHz)
0.33% (10kHz)
0.47% (20kHz)
6mV at Phono:
1.15% (20Hz)
0.46% (1kHz)
0.54% (10kHz)
0.66% (20kHz)
15mV at MIC:
0.35% (20Hz)
0.26% (1kHz)
0.42% (10kHz)
0.48% (20kHz)
I.M. Distortion:
0.48% (MIC, 0.5V output)
0.2% (Tuner, 0.5V output)
Hum and Noise:
72dB below (2.5V RMS, 0.5V at Tuner input)
62dB below (2.5V RMS, 6mV at Phono input)
70dB below (2.5V RMS, 15mV at MIC input)
[Tone Control]
Bass: +18 -12dB (50Hz)
Treble: +15 -20dB (15kHz)
Tubes used:
12AU7 x 1
12AX7 x 2
Power Supply:
AC 125V, 60Hz
Overall Dimensions (W x H x D):
319 x 92 x 149mm
Weight:
Approx. 1.59kg (Net)
Approx. 3.18kg (Shipping)
Year:
Around 1957

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