RME ADI-2/4 Pro SE 2-Ch High-End USB Audio Converter & Headphone Amp
This next-generation RME ADI-2/4 Pro SE 2-Ch High-End USB Audio Converter features a redesigned circuit board, enhanced specifications, and a faster DSP. Thus, expect exceptionally transparent audio at your fingertips. Moreover, it features powerful headphone amps with an IEM mode, ultra-low-noise 4.4 mm balanced output and RIAA mode for high-quality vinyl conversion.
Many Functions, One Device
Firstly, enjoy 5-band equalising, quick bass and treble adjustment and a reimagined loudness sound control. Within the RME ADI-2/4 Pro SE is also equipped with XLR and TRS jacks befitting of any headphone you use, including your favourite IEMs via the Pentaconn connector. Furthermore, this converter provides optical SPDIF I/O for ADAT as well as coaxial SPDIF (RCA) and AES I/O (XLR) for your various input and output needs.
Flexible and Powerful
RME’s upgraded Extreme Power headphone stage now delivers more powerful output—up to 3.4 watts per channel. A new IEM mode adds extra low-noise power settings for sensitive IEMs, ensuring full compatibility. On your ADI-2/4 Pro SE 2-Ch High-End USB Audio Converter, all headphone outputs include smart protections. For example, auto volume adjustment, plug detection and dual headphone support. Additionally, the new True Balanced mode provides fully balanced headphone operation, allowing separate audio signals to run simultaneously.
Key Features:
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32-bit / 768kHz conversion with 123 dBA SNR
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Extreme Power headphone amps with IEM mode
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True Balanced headphone & line output operation
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USB Class Compliant audio interface (6 in / 8 out)
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Built-in MM phono preamp with RIAA EQ for vinyl
Analog Inputs
XLR/TRS
Input: XLR and 6.3 mm TRS jack, servo-balanced
Input impedance @ 1 kHz: balanced: 90 kOhm, unbalanced: 45 kOhm
Input sensitivity switchable: +24 dBu, +19 dBu, +13 dBu, +7 dBu, +1 dBu @ 0 dBFS
Digital Trim Gain range: 0 dB up to +6 dB, in steps of 0.5 dB
SNR @ +13/19/24 dBu: >120 dB (AES17), >123 dBA
SNR @ +7/+1 dBu: >120 dB (AES17), 123 dBA
Frequency response @ 44.1 kHz, -0.1 dB: 0.4 Hz – 20.4 kHz
Frequency response @ 96 kHz, -0.5 dB: 0.2 Hz – 45.5 kHz
Frequency response @ 192 kHz, -1 dB: 0.15 Hz – 90.9 kHz
Frequency response @ 384 kHz, -1 dB: 0.15 Hz – 182 kHz
Frequency response @ 768 kHz, -1 dB: 0.15 Hz – 348 kHz
THD @ -0.5 dBFS: > -130 dB, 0.0000316 %
THD+N @ -0.5 dBFS: -119 dB, 0.000112 %
Channel separation: > 130 dB @ 1 kHz
DC Filter: None. With Filter RME @ -1 dB: < 0.5 Hz
RIAA Mode via TS
RIAA deviation 20 Hz – 20 kHz: < ±0.05 dB
Input impedance: 45 kOhm @ 1 kHz
Input capacitance: 150 pF
Sensitivity:
+14 dB: 20 mV, +20 dB: 10 mV
+26 dB: 5 mV, +32 dB: 2.5 mV
+38 dB: 1.25 mV
Trim Gain: Additional 0 to +6 dB in steps of 0.5 dB
Maximum input level:
@ +14 dB: 114 mV, -16.6 dBu
@ +20 dB: 57 mV, -22.6 dBu
@ +26 dB: 28.4 mV, -28.7 dBu
@ +32 dB: 14.3 mV, -34.7 dBu
@ +38 dB: 7.2 mV, -40.6 dBu
Digital headroom: 15 dB
SNR (20 Hz-20 kHz):
+14/20 dB Gain: 88 dB, 92 dBA
+26 dB Gain: 80.5 dB, 85 dBA
+32 dB Gain: 74 dB, 78.5 dBA
+38 dB Gain: 68 dB, 73 dBA
THD+N (20 Hz-20 kHz):
+14/+20 dB: -88 dB, 0.004 %
+26 dB: -81.5 dB, 0.0084 %
+32 dB: -74 dB, 0.019 %
+38 dB: -69 dB, 0.035 %
Analog Outputs
1/2 XLR
Maximum Output Level: +26.5 dBu @ 0 dBFS
Output level switchable: +24 dBu, +19 dBu, +13 dBu, +7 dBu, +1 dBu
SNR:
@ +7/+13/19/24 dBu: 120 dB (AES17), 123 dBA
@ +1 dBu: 119 dB (AES17), 120 dBA
Frequency response:
@ 44.1 kHz, -0.1 dB: 0 Hz – 21 kHz
@ 96 kHz, -0.5 dB: 0 Hz – 44.9 kHz
@ 192 kHz, -1 dB: 0 Hz – 90 kHz
@ 384 kHz, -1 dB: 0 Hz – 181 kHz
@ 768 kHz, -3 dB: 0 Hz – 285 kHz
THD @ 0 dBFS: < -120 dB, 0.0001 %
THD+N @ 0 dBFS: -116 dB, 0.00016 %
Channel separation: > 130 dB
Output impedance @ 1 kHz:
@ +24/+19/+13 dBu: 213 Ohm
@ +7/+1 dBu: 113 Ohm
1/2 TS (rear)
Output: 6.3 mm TRS jack, impedance-balanced
Max output level: +21.5 dBu @ 0 dBFS
SNR:
@ +19/13 dBu: 120 dB (AES17), 123 dBA
@ +7 dBu: 119 dB (AES17), 121 dBA
@ +1 dBu: 118 dB (AES17), 118 dBA
Output impedance @ 1 kHz:
Balanced: 213 Ohm, Unbalanced: 106 Ohm
Phones 1/2, Phones 3/4
Output: 6.3 mm TRS stereo jack, unbalanced
Max output level: +21.5 dBu
Output impedance: 0.1 Ohm
SNR:
@ +19 dBu (Hi-Power): 120 dB (AES17), 122 dBA
@ +7 dBu (Lo-Power): 119 dB (AES17), 121 dBA
@ +1 dBu (IEM): 118 dB (AES17), 120 dBA
Output level @ 0 dBFS, 100 Ohm+ load: +21.5 dBu (9.2 V)
Minimum load impedance:
IEM @ +1 dBu: 4 Ohm
Lo-Power @ +7 dBu: 8 Ohm
Hi-Power @ +19 dBu: 24 Ohm
THD @ +20 dBu, 32 Ohm load: -124 dB, 0.000057 %
THD+N @ +20 dBu, 32 Ohm load: -118 dB, 0.00011 %
Max power @ 0.001% THD: 2.1 W per channel
Channel separation (20 Hz – 20 kHz): 80 dB @ 32 Ohm
Balanced Phones mode
Max output level: +27.5 dBu (18.4 V) @ 0 dBFS
Switchable levels:
IEM: +7 dBu (1.73 V)
Lo-Power: +13 dBu (3.46 V)
Hi-Power: +25 dBu (13.8 V)
Output impedance: 0.2 Ohm
SNR:
@ +25 dBu: 120 dB (AES17), 122 dBA
@ +13 / +7 dBu: 119 dB (AES17), 121 dBA
Minimum load impedance:
IEM @ +7 dBu: 8 Ohm
Lo-Power @ +13 dBu: 12 Ohm
Hi-Power @ +25 dBu: 40 Ohm
Max power @ 0.001% THD: 4 W per channel
Channel separation: > 130 dB @ 1 kHz
Digital Inputs
Lock Range: 28 kHz – 200 kHz
Jitter suppression: > 50 dB (> 1 Hz)
Formats accepted: Consumer and Professional
AES/EBU:
1 x XLR, transformer-balanced, galvanically isolated
Input sensitivity: 1.0 Vpp
SPDIF coaxial:
1 x RCA, transformer-balanced
High sensitivity: < 0.3 Vpp
AES/EBU compatible
SPDIF optical:
1 x optical
ADAT compatible
Digital Outputs
AES/EBU:
1 x XLR, transformer-balanced, galvanically isolated
Output level: 2.7 Vpp
Format: AES3-1992, Professional
Sample rate: 28 kHz – 200 kHz
SPDIF coaxial:
1 x RCA
Output level: 0.75 Vpp
Format: Consumer SPDIF
SPDIF optical:
1 x optical
Format: Consumer (SPDIF)
Sample rate: 28 kHz – 200 kHz
Digital Clocking
Clock sources: Internal, AES In, SPDIF In, ADAT In
Jitter suppression of external clocks: > 50 dB (> 1 Hz)
Effective clock jitter on AD/DA: Near zero
PLL stability: Zero dropout up to >100 ns jitter
Additional PLL: For ADAT varispeed
Supported external sample rates: 32 kHz – 200 kHz
Internal sample rates: 44.1 kHz – 768 kHz
General
Power supply: External switching PSU, 100 – 240 V AC, 3.3 A, 40 W
Standby power (DC 12 V): 170 mW
Standby power (AC 230 V): 280 mW
Idle power consumption: 14 W
Max power consumption: 30 W
Idle current @ 12 V: 1.16 A
Dimensions (WxHxD): 215 x 44 x 160 mm (8.5″ x 1.73″ x 6.3″)
Weight: 1.2 kg (2.2 lbs)
Temperature range: +5° to +40° C (41° F to 112°F)
Humidity: < 75%, non-condensing
