SPL Phonos - RIAA Phono Preamplifier with VOLTAiR Technology (Red)

SPL Phonos - RIAA Phono Preamplifier with VOLTAiR Technology (Red)
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Expected availability: 2-4 weeks

Important Notice

  • This item is noncancelable and nonreturnable.
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The red Phonos RIAA Phono Preamplifier from SPL is designed for use with record players using either MM (moving magnet) or MC (moving coil) cartridges. The equalization curve is according to RIAA and suitable for all vinyl records. It offers up to 71.5 dB gain for MC cartridges and 50 dB gain for MM cartridges.

The preamplifier uses proprietary VOLTAiR technology (120V rail technology) to offer a high voltage of 120V (+/-60 VDC). The 120V electronics operate quasi 'idle' even at highest audio levels and impulse peaks. They never operate on the limit and therefore never get stressed. The music presents itself with a pleasant serenity and realness.

The purpose of the RIAA equalization, which is a form of pre-emphasis on recording and de-emphasis on playback, is to permit greater recording times by decreasing the mean width of each groove, to improve sound quality, and to reduce the groove damage that would otherwise arise during playback.

120V rail phono preamplifier for record players
RIAA equalization
Suitable for MM (Moving Magnet) and MC (Moving Coil) cartridges
Maximum preamplification of 51 dB (MM) and 70 dB (MC)
Styroflex condensers used throughout the RIAA equalizer
Gold-plated RCA inputs 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


Inputs and OutputsRCA, unbalanced, gold-plated
Input Impedance (MM): 100 kOhms
Input Impedance (MC): Switchable
Output Impedance: < 5 Ohms
Crosstalk: -80 dB (at 1 kHz)
FilterRIAA equalizer (after Douglas Self)
GainSwitchable: Normal, -10 dB, +4 dB
PreamplifierMoving Magnet (MM) Preamplifier
Amplification: 46 dB (Normal), 36 dB (-10 dB), 50 dB (+4 dB)
Switchable Capacitance: Off, 150 pF, 220 pF and 330 pF
Noise (A-weighted): -85.3 dB
AmplifierMoving Coil (MC) Amplifier
Amplification: 67 dB (Normal), 56 dB (-10 dB), 71.5 dB (+4 dB)
Impedances: 100, 220, 470, 2k2, 4k7, 10 kOhms
Noise (A-weighted): -61.7 dB
Operating VoltageInternal Operating Voltage: +/- 60 V
Power SupplyMains Voltage (Switchable): 230 VAC / 50 Hz or 115 VAC / 60 Hz
Fuses: 230 V: T 500 mA; 115 V: T 1 A
Power Consumption: Maximum 30 VA
Standby Power Consumption: 0.7 W
Dimensions (W x H x D)With Feet: 10.95 x 2.24 x 13" (278 x 57 x 330 mm)
Weight7.05 lb (3.2 kg)
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