SPL Sound

Phonos

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  • Regular price R 33,906.35


Phonos

RIAA Phono Preamplifier

Phonos is a preamplifier for record players using either moving magnet (MM) or moving coil (MC) cartridges. The equalization curve is according to RIAA and suitable for all vinyl records since 1954. The RIAA filter is designed after Douglas Self. 

With up to 71.5 dB gain for MC cartridges and 50 dB gain for MM cartridges Phonos belongs to the most powerful phono preamplifiers.

  • 120 V rail phono preamplifier for record players
  • RIAA equalization (after Douglas Self)
  • Suitable for MM (Moving Magnet) and MC (Moving Coil) cartridges
  • Max. preamplification: 50dB (MM); 71.5dB (MC)
  • Capacitances for MM: Off, 150 pF, 220 pF and 330 pF
  • Impedances for MC: 100, 220, 470; 2k2, 4k7 and 10 kohms
  • Styroflex condensers used throughout the RIAA equalizer
  • Switchable Gain: Normal, -10 dB, +4 dB
  • Gold-plated RCA in- and outputs
  • Audio ground connection for record player
  • Switchable rumble filter (Subsonic)
  • Standby/power on switch
  • Linear power supply with toroidal transformer
  • Front and Lid made from aluminum, housing made from sheet metal
  • Made in Germany

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. More information on the 120 V Rail Technology can be found here.

 

Specifications

Inputs and Outputs

  • RCA, unbalanced, gold-plated
  • Input impedance (MM): 47 kohms
  • Input impedance (MC): switchable 
  • Output impedance: < 5 ohms
  • Crosstalk: -80dB (at 1 kHz)

Filter

  • RIAA equalizer (after Douglas Self)

Moving Magnet (MM) preamplifier 

  • Amplification: 46 dB (Norm.), 36 dB (-10 dB), 50 dB (+4 dB)
  • Switchable capacitance: Off, 150 pF, 220 pF and 330 pF
  • Noise (A-weighted): -85,3 dB

Moving Coil (MC) Verstärker

  • Amplification : 67 dB (Norm.), 56 dB (-10 dB), 71.5 dB (+4 dB) 
  • Schaltbare Impedances: 100, 220, 470, 2k2, 4k7, 10 k ohms
  • Noise (A-weighted): -61,7 dB

Internal Operating Voltage

  • +/- 60 V

Power Supply

  • Mains voltage (switchable): 230 V AC / 50 Hz or 115 V AC / 60 Hz
  • Fuses: 230 V: T 500 mA; 115 V: T 1 A 
  • Power consumption: max. 30 VA
  • Stand-by power consumption: 0.7 W

 

Dimensions (incl. feet)

  • 278 mm W x 57 mm H x 330 mm D
  • 10.95 in W x 2.24 in H x 13 in D

Weight

  • 3.2 kg; 7.05 lbs (unit only)
  • 4.3 kg; 9.5 lbs (shipping)

0 dBu = 0.775 V. Subject to change without notice.