Rotel Diamond Series RA-6000 Integrated Amplifier

Class AB muscle with a reference-grade DAC

The Rotel Diamond Series RA-6000 Integrated Amplifier marks 60 years of Rotel's Japanese heritage. It delivers 350 watts of Class AB power per channel into 4 Ω and handles a wide spread of modern and legacy analogue and digital sources. A Texas Instruments 32-bit/384kHz DAC, MQA support and a moving magnet phono stage sit alongside aptX HD Bluetooth in one purposeful chassis.

Why You'll Love It

• Serious Class AB power. Two channels of Class AB amplification deliver 350 watts each into 4 Ω, with controlled, deep bass and fine detail.
• Reference-grade digital. A Texas Instruments 32-bit/384kHz DAC with MQA and MQA Studio support, plus certified Roon Tested operation, gets the most from streamed and stored files.
• Connects to everything. Balanced XLR and RCA line inputs, a moving magnet phono stage and aptX HD and AAC Bluetooth cover records, streamers and wireless alike.

Under the Hood

• High-resolution PC-USB. The asynchronous PC-USB input runs up to 32-bit/384kHz, decodes and renders MQA, and is fully certified Roon Tested.
• Low distortion by design. Total harmonic distortion stays under 0.0075%, with a damping factor of 600 and a line-level signal to noise ratio of 103 dB.
• Built for integration. Front panel controls, a backlit IR remote and a two-line display are joined by Ethernet, RS232, a 12V trigger and an external remote input.

CHT Insider Verdict

The RA-6000 is Rotel at its most complete, matching genuine Class AB power to a modern digital front end that most rivals charge more for. It will drive demanding speakers with ease and still spoil a good pair of bookshelves. For a one-box system built around both vinyl and high-resolution files, it is hard to fault.

Pro Tip: For the best digital sound, install the driver and use the asynchronous PC-USB input, which unlocks the full 32-bit/384kHz playback and native MQA rendering that the other digital inputs cannot reach.