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SPECIFICATIONS
Vacuum tube compliment: 6922 x 2 (gain) plus 7044 x 4 (output buffers)
Fuse type and ratings: 117 VAC: 1.5 Amp 3AG slow-blow main
0.5 Amp 3AG slow-blow logic
234 VAC: 0.75 Amp 3AG slow-blow main
0.25 Amp 3AG slow-blow logic
Moving Magnet input impedance: 5-step user adjustable via fixed low-noise resistors.
25, 50, 100, 200 and 47000 ohms.
Moving Coil input impedance: 5-step user adjustable via multi-tap autoformer:
25, 50, 100, 200 and 400 ohms.
Input Termination Capacitance: Variable in 10 picofarad steps from 10 to 1100 pF.
(1.1 nF). Residual input capacitance less than 40 pF.
Gain Steps: 4-step user adjustable, 50, 55, 60 and 65 dB active gain at 1 kHz referred to FIXED
output jack, 10 k-ohm load. Additional gain available via MC step-up autoformer.
Deviation from RIAA curve: Less than +0.5 / -0.3 dB from 20 Hz to 20 kHz, any gain setting.
Typically less than +/- 1 dB from 10 Hz to 100 kHz
Inter-channel differential phase: Less than 4 degrees from 20 Hz to 20 kHz, any gain setting.
Typically less than 2 degrees.
Inter-channel differential gain: Less than +/- 0.5 dB from 20 Hz to 20 kHz, any gain setting.
Dynamic Range: 101 dB @ 1 kHz, 1% THD
200 ohm source, 47 k-ohm input, @55dB Gain 97 dB @ 1 kHz, 0.1% THD
Maximum Output: +27dBm @ 1KHz with 3% THD into 100Kohm load
FIXed Output impedance: 150 ohms. Minimum suggested load greater than 1500 ohms.
VARIable Output impedance: 75 ohms. Minimum suggested load greater than 600 ohms.
GAIN setting Fixed Ouptut Vari O/P
MM Noise (S+N+D) / (N+D): 50 dB: 86 dB 108dB 99dB 86dB
200 ohm source, 47 k-ohm input 55 dB: 84 dB 108dB 99dB 85dB
A-weighted Referred to 2.54 mV 60 dB: 80 dB 108dB 94dB 80dB
rms @ 1 kHz. 65 dB: 75 dB 108dB 89dB 75dB
9:00 12:00 V/C FULL
MC Noise (S+N+D) / (N+D): 50 dB: 84 dB 108dB 98dB 85dB
100 ohm source, 100 ohm input 55 dB: 80 dB 108dB 95dB 81dB
A-weighted Referred to 0.5 mV 60 dB: 75 dB 108dB 90dB 76dB
rms@ 1KHz and rated input impedance 60 dB: 70 dB 107dB 85dB 71dB
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