Rega IOS Reference Phonostage.
Good condition. Original box.
The Rega IOS is simply one of the finest moving coil phono preamplifiers ever designed. The first stage is a step-up transformer with selectable loading for your choice of MC cartridge. Then there are two separate Class-A amplifier sections to drive the high and low frequencies of the passive RIAA equalization stages. Then the final output is driven by the purest, most natural analog output stage. This provides for the reproduction of the all the subtleties in your music, as well as the dynamics and speed necessary to experience the realism necessary to create the illusion of a live performance in your listening room.
Input sensitivity for 200mV output: 61uV - 70dB gain setting I 118uV - 64dB gain setting II
Gain input to output: 64dB Minimum 70dB Maximum
Input load: 50, 100, 150, 300 & 400Ω
DC resistance (Zobel network): 5 to 7.5Ω (6.25Ω nominal) 7.5 to 10 Ω (8.75Ω nominal) 10 to 12.5Ω (11.25 Ω nominal) 12.5 to 15 Ω (13.5Ω nominal)
MC Transformer: Sowter 8055
Input overload @ 1KHz: 8.7mV - 64dB gain setting 4.5mV - 70dB gain setting
Maximum output level: 14.7V RMS
Rated output level: 200mV
Output resistance: 100Ω
Minimum output load resistance: 1KΩ for –3dB point @ 15Hz
RIAA accuracy (Better than): 0.2dB
Frequency Response: 100Hz to 40KHz 14Hz (-3dB) to 54KHz (-0.5dB)
THD (Better than): 0.008% @ 1.5V 20Hz 20KHz
THD bandwidth: 100Hz to 22KHz
Output noise level: -85dBV (64dB gain setting & 15Ω input load)
Notch Filter centre frequency: 8.5KHz
Notch Filter maximum depth: -6.5dB
Notch Filter Q: 2.5
AC Supply: 230V & 115V Nominal +/-10%
Power Consumption: 21
Return & Refund Policy
• All Pre-Owned items have been tested before listing.
• NO WARRANTY.
• We encourage buyers to test and verify the equipment condition at our showroom (1 Coleman Street, The Adelphi, Unit 03-35) — pre-owned condition as shown on our listed page.