Clean, powerful output
A pair of Japanese Sanken transistors with 420W dual toroidal transformers.
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Classic amp, modern connections.
An integrated amp with a Sanken transistor output stage, AKM AK4493EQ DAC, XMOS USB input and Bluetooth 5.0.
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MEET THE ONIX
An integrated amp with a Sanken transistor output stage, AKM AK4493EQ DAC, XMOS USB input and Bluetooth 5.0.
A pair of Japanese Sanken transistors with 420W dual toroidal transformers.
The AK4493EQ supports up to 32-bit/768kHz and DSD256 via USB.
Nichicon KG capacitors, MUSES8920 filters and gold-plated CMC connectors.
The ONIX RA-125 is a full-size integrated stereo amplifier delivering 125W per channel into 8Ω, updated with a built-in DAC for modern sources. Japanese Sanken output transistors and 420W dual toroidal transformers drive the speakers, and an AKM AK4493EQ DAC handles USB at up to 768kHz/32-bit and DSD256, plus optical and Bluetooth 5.0 inputs.

The output stage uses a pair of Japanese Sanken transistors, the 2SC3264 and 2SA1295, for clean, powerful output with plenty of drive, wide bandwidth and a natural, clear sound. The 420W dual toroidal transformers keep magnetic leakage low, with high stability and low phase change, which adds noticeably to the overall sound quality.
ONIX chose special large-capacity Nichicon KG capacitors, up to 10,000µF/63V, for the analogue circuit, and uses high-quality copper internal wiring with gold-plated CMC terminals and connectors, so nothing degrades the sound.

The digital section of the 2021 RA-125 is built around the AKM AK4493EQ, for a beautifully natural and smooth sound and full support for modern hi-res formats. When modernising the RA-125, ONIX also used newer, better parts such as MUSES8920 op-amps for the low-pass filter, for a balanced, coherent sound. Its dedicated XMOS XU208 USB input turns the RA-125 into a high-end USB DAC for a computer (PCM up to 768kHz/32-bit and DSD256), and a Qualcomm CSR8675 Bluetooth 5.0 chip streams from phones and tablets reliably and in high quality.

| Power | 125W per channel @ 8Ω |
|---|---|
| Output stage | Sanken 2SC3264 / 2SA1295 · 420W dual toroidal transformers |
| Digital inputs | USB (XMOS XU208, PCM 768kHz/32-bit, DSD256) · optical · Bluetooth 5.0 (Qualcomm CSR8675) |
| Analogue | CD, DVD, tuner, AUX, tape in and out, bypass |
| DAC | AKM AK4493EQ · MUSES8920D low-pass filter |
| Display and power | LED display · 220V mains |
| Size and weight | 430 × 401 × 119mm · 13.8kg |
THE FINER DETAILS
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Every UK order has a free delivery option, and orders of £50 or more qualify for free next day delivery. Order by 12 noon, Monday to Friday, for next day delivery; orders placed after 12 noon, at the weekend or on a bank holiday are dispatched on the next working day. Stock availability and destination also affect arrival — check the options shown at checkout.
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