With the new REFERENCE (PH-517) phono preamplifier Silent WIRE already offers absolute High-end at the highest tonal level and at an affordable price.

Special features of the REFERENCE phono preamplifier:

- The REFERENCE uses low-noise, high-end audio single-opamps.
- Signal path and RIAA network are very low impedance, thus lower self-noise.
- Further reduction of the inherent noise in MM mode when virtual input resistance is selected.
- Parallel usable configurable balanced output and unbalanced output.

PH-517 Rückseite

Further features:

- Balanced inputs - why:

  • MM and MC systems are symmetric sources
  • many turntables with (RCA) RCA output can be connected symmetrically with a symmetrical adapter cable.
  • less noise with balanced connection
  • No parallel RCA input to the preamplifiers, since this would worsen the susceptibility. (open input = antenna)
    (Turntables that can not be connected symmetrically, are connected with a cinch to XLR adapter and the inputs switched to unbalanced connection.)

- Separate input networks for MM and MC operation
   enable easy system change. Previously set input capacitance and input resistance
   are adopted when switching between the MM / MC inputs.

- Adjustable MM input capacity from 25pF to 600pF.
   Input resistance = 47 kOhm

- Adjustable MC input resistance from 40 ohms to 1000 ohms.
  Input capacity 25-40 pF.

- Symmetrical input amplifier built with low noise operational amplifiers
optimized for audio applications and with low-noise resistances.

- DC coupled signal path with offset compensation at the output
  = no signal interference due to capacitors and transformers in the signal path.

- 2-stage RIAA equalization network, especially suitable for audio applications,
 1% KP foil capacitors and 0.1% resistors.
 The use of KP capacitors ensures the least possible negative influencing
 on the audio signal. With the small tolerances of the components the best
 possible compliance with the RIAA equalization curve is achieved.

- A powerful, multi-regulated and filtered power supply
  provides for the strong and clean supply of the amplifier channels. In addition, the Supply is filtered separately for each channel and thus the mutual influence is reduced.

Available variants:

PH 517 schwarz

PH 517 silber