RME ADI-2 DAC and Headphone/IEM amplifier

Ultra-fidelity PCM / DSD DAC including headphone and IEM outputs.

Price: £979.00


As a recent ADI-2 DAC review put it - "We'll put this as simply as we can: the ADI-2 DAC is one of the best-sounding pieces of audio equipment we've ever heard.Not just one of the best DACs; one of the best anything, period.

We are talking absolutely astonishing clarity. Every single element of every song we listened to felt as precise and machined as a freshly-cut diamond, with incredible realism; and not the stark, almost brutal realism of some DAC's costing 2-4 times more. The ADI-2 DAC sounds and feels natural and genuine; nothing was forced or out of place, and to our ears, super-precise.... And noise? Get outta here. It was, as far as we could tell, close to zero."

Here at Touchstone 2c we think this sub £900.00p DAC would be hard to beat for musicallity and 'rightness' against any other DAC under £2,500.00p ...or more in most cases, hook up to your amplifier and be amazed!  If you are looking for a Headphone based DAC ouput, look no further, the sound quality is quite outstanding. 


There is a 5 year manufacturers guarantee on this DAC.

The ADI-2 DAC is the home hi-fi optimized version of the ADI-2 Pro, a studio DAC (and ADC) converter of the highest quality. With many fresh ideas, innovative features and numerous useful functions, the latest ADI-2 DAC for home audio has quickly become a reference DAC component for those in the know!

Thanks to its combination of high-end Digital to Audio Conversion with two exceptionally good headphone and IEM (in ear monitor) outputs plus a remote control, it has received countless enthusiastic reviews for its sound, flexibility, and technical capabilities.

Whilst this feature packed DAC may look daunting to the home user, it sings right out of the box and only needs 'fiddling with' at leisure, or never at all!  It has a lights off function so the display is not showing if required, useful if playing in a darkened room.  A Remote Control is included in the package.

If you are streaming your music and using headphones or IEM's, the outputs offer a really crisp, detailed and musical quality, not agressive sounding in any way. 

The ADI-2 DAC is the first device in the RME range with SteadyClock FS. The original SteadyClock has earned its accolades over years, flawless operation in numerous RME digital devices, guaranteeing that using the internal clock will produce exactly the same sound as when using an external one (as is often the case in Pro-Audio applications). SteadyClock highly rejects jitter and handles all digital interface formats in an exemplary way.

With SteadyClock FS the focus was put on reducing the self jitter of SteadyClock itself to new lows. The self jitter measured through DA conversion now reaches levels that usually are only available in master quartz clock mode, while SteadyClock still always runs in PLL mode - no matter if internal or external clock, sound is exactly the same (again). The low phase noise oscillator driving the updated circuit reaches jitter specs lower than a picosecond (ps), an area called FemtoSecond. Hence SteadyClock FS.


 Digital Inputs


  • Lock Range: 28 kHz – 200 kHz
  • Jitter suppression: > 50 dB (2.4 kHz)
  • Jitter when synced to input signal: < 1 ns

SPDIF coaxial

  • 1 x RCA, according to IEC 60958
  • High-sensitivity input stage (< 0.3 Vpp)
  • AES/EBU compatible (AES3-1992)

SPDIF optical

  • 1 x optical, according to IEC 60958
  • ADAT compatible

Analog Outputs


  • Output level switchable +19 dBu, +13 dBu, +7 dBu, +1 dBu @ 0 dBFS
  • Signal-to-noise ratio (SNR) @ +7/+13/+19 dBu: 120 dB RMS unweighted, 123 dBA
  • Signal-to-noise ratio (SNR) @ +1 dBu: 117 dB RMS unweighted, 120 dBA
  • Frequency response @ 44.1 kHz, -0.1 dB: 0 Hz – 20.2 kHz
  • Frequency response @ 96 kHz, -0.5 dB: 0 Hz – 44.9 kHz
  • Frequency response @ 192 kHz, -1 dB: 0 Hz – 88 kHz
  • Frequency response @ 384 kHz, -1 dB: 0 Hz – 115 kHz
  • Frequency response @ 768 kHz, -3 dB: 0 Hz – 109 kHz
  • THD @ 0 dBFS: < -120 dB, 0.0001 %
  • THD+N @ 0 dBFS: -116 dB, 0.00016 %
  • Channel separation: > 120 dB
  • Output impedance: 200 Ohm balanced, 100 Ohm unbalanced


  • Output: 6.3 mm TRS jack, unbalanced, stereo
  • Output impedance: 0.1 Ohm
  • Signal-to-noise ratio (SNR) @ +22 dBu: 120 dB RMS unweighted, 123 dBA
  • Signal-to-noise ratio (SNR) @ +7 dBu: 118 dB RMS unweighted, 121 dBA
  • Output level at 0 dBFS, High Power, load 100 Ohm or up: +22 dBu (10 V)
  • Output level at 0 dBFS, Low Power, load 8 Ohm or up: +7 dBu (1.73 V)
  • THD @ +18 dBu, 32 ohm load, 1.2 watts: -120 dB, 0.0001 %
  • THD+N @ + 18 dBu, 32 Ohm Load: -114 dB, 0.0002 %
  • THD @ +14 dBu, 16 Ohm load, 0.94 Watt: -110 dB, 0.0003 %
  • Max power @ 0.001% THD: 1.5 W per channel


  • As Phones, but:
  • Output level at 0 dBFS: -3 dBu, 0.55 V
  • Signal-to-noise ratio (SNR) @ -3 dBu: 118 dB RMS unweighted, 121 dBA
  • Max power, 8 Ohm, 0.001% THD: 40 mW per channel


  • Clocks: Internal, SPDIF In
  • Jitter suppression of external clocks: > 50 dB (2.4 kHz)
  • Effective clock jitter influence on DA conversion: near zero
  • PLL ensures zero dropout, even at more than 100 ns jitter
  • Additional Digital Bitclock PLL for trouble-free varispeed ADAT operation
  • Supported sample rates for external clocks: 28 kHz up to 200 kHz
  • Internally supported sample rates: 44.1 kHz up to 768 kHz


  • Included power supply: external switching PSU, 100 - 240 V AC, 2 A, 24 Watts
  • Standby power consumption: 120 mW (10 mA)
  • Idle power consumption: 7 Watts, Max. power consumption: 18 Watts
  • Idle current at 12 V: 570 mA (6.8 Watts)
  • Dimensions (WxHxD): 215 x 52 x 150 mm (8.5" x 2.05" x 5.9")
  • Weight: 1.0 kg ( 2.2 lbs)
  • Temperature range: +5° up to +50° Celsius (41° F up to 122°F)
  • Relative humidity: < 75%, non condensing



There is a 5 year manufacturers guarantee on this DAC.