Rega IOS Reference Phonostage


SGD 4,900

SGD 8500

Good condition. Original box.

Product Description

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.
• 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.