Phonos is a preamplifier for record players using either moving magnet or moving coil cartridges. The equalization curve is according to RIAA and suitable for all vinyl since 1954.
The RIAA filter is designed after Douglas Self.
With up to 70 dB gain for MC cartridges and 51 dB gain for MM cartridges Phonos belongs to the most powerful phono preamplifiers.
The technical basis of all Professional Fidelity units is our proprietory 120 V Rail Technology, which we also call VOLTAiR technology. The name makes reference to the unequalled high voltage of 120 V (+/-60 V DC) and the huge dynamic range of over 140 dB that goes with it.
Available in Black, Red or Silver.
120 V rail phono preamplifier for record playersRIAA equalization (after Douglas Self)Suitable for MM (Moving Magnet) and MC (Moving Coil) cartridgesMax. preamplification: 51dB (MM); 70dB (MC)Capacitances for MM: Off, 150 pF, 220 pF and 330 pFImpedances for MC: 100, 220, 470; 2k2, 4k7 and 10 kohmsStyroflex condensers used throughout the RIAA equalizerSwitchable Gain: Normal, -10 dB, +4 dBGold-plated RCA in- and outputsAudio ground connection for record playerSwitchable rumble filter (Subsonic)Linear power supply with toroidal transformerMade in Germany
Inputs and Outputs
RCA, unbalanced, gold-platedInput impedance (MM): 100 kohmsOutput impedance (MC): switchableOutput impedance: < 5 ohmsCrosstalk: -80dB (at 1 kHz)
RIAA equalizer (after Douglas Self)
Moving Magnet (MM) preamplifier
Amplification: 47 dB (Norm.), 37 dB (-10 dB), 51 dB (+4 dB)Switchable capacitance: Off, 150 pF, 220 pF and 330 pFNoise (A-weighted): -85,3 dB
Moving Coil (MC) Verstärker
Amplification : 66 dB (Norm.), 56 dB (-10 dB), 70 dB (+4 dB)Schaltbare Impedances: 100, 220, 470, 2k2, 4k7, 10 k ohmsNoise (A-weighted): -61,7 dB
Internal Operating Voltage
+/- 60 V
Mains voltage (switchable): 230 V AC / 50 Hz or 115 V AC / 60 HzFuses: 230 V: T 500 mA; 115 V: T 1 APower consumption: max. 30 VAStand-by power consumption: 0.7 W
Dimensions (incl. feet)
278 mm W x 57 mm H x 330 mm D10.95 in W x 2.24 in H x 13 in D
3.2 kg; 7.05 lbs (unit only)4.3 kg; 9.5 lbs (shipping)