GM PHONO V3.0
- Unique Transformer-FET-Transformer circuit
- Three inputs (2 MC, 1 MM) selectable and adjustable separately
- Five pre-set equalization curves
- 72 dB gain (55 dB MM)
- Balanced/unbalanced input and output
- 10mm machined aluminum chassis
Technical data and main features
- MC 1 – MC2 gain: 71dB (0.1mV – 1.2mV)
- MC3/MM gain: 51dB (1.2mV – 5mV)
- MC3 / MM frequency response (RIAA) 20Hz- 20KHz +/- 0.1dB — 8Hz – 120KHz @ -3dB
- MC1 / MC2 frequency response (RIAA) 20Hz- 20KHz +/- 0.1dB — 6Hz – 150KHz @ -3dB
- Equalization filter (de-emphasis): 5 independent
- LR balance: within +/-0.1dB
- Equalization curve accuracy within +/- 0.1 dB
- Crosstalk (stereo separation) > 80dB
- Total harmonic distortion (THD) @ standard level (0dBu = 0.775V) <0.05%
- THD @ international audio level (+ 4dBu – 1.22V) <0.07%
- Signal-to-noise ratio (SNR) with 0dBu (0.775V) output as reference: > 100dB A
- Maximum output voltage: 12.4Vrms (35VPeP)
- Load impedance for MC1/MC2 has five selectable values: 30; 100; 300; 500; 1K Ohm (@1KHz)
- Load impedance for MC3/MM has five selectable values: 10kΩ; 22kΩ; 47kΩ; 47kΩ+220pF; 95kΩ.
- Output impedance = 220 Ohm (1KHz) XRL and RCA
- 0°/180° reversible output signal phase
- Auto anti-collision and mute circuit during power on and off
- Power supply 230Vac maximum 30VA (Transformer designed for 115Vac)
SELECTOR POSITION |
TURNOVER |
ROLLOFF |
MAIN LABELS |
|---|---|---|---|
A RIAA |
500R |
-13.7 |
RIAA; RCA; New Orthophonic |
B |
500R |
-12.3 |
EMI LP; AES; London; Ne (RIAA Neumann pole) |
C |
500 |
-10.5 |
DIN; Teldec; DGG; DECCA; Mercury; ffrr LP |
D |
400 |
-5 |
Philips; Telefunken; including many 78 |
E |
500C |
-16 |
Columbia Lp; NAB; NARTB |
