RME's ADI-8 QS is an 8-Channel hi-end AD/DA converter with an unrivalled bunch of features. The device combines excellent analog circuit design with outstanding low latency AD/DA converter chips of the latest generation. Along with the integrated SteadyClock, the QS offers an AD- and DA-conversion of the highest quality.
Analog and digital limiters, 4 hardware reference levels up to +24 dBu, AES/EBU and ADAT I/O (optional MADI I/O) at up to 192 kHz, remote control via MIDI, digital input and output trimming for full level calibration, volume control for all 8 analog outputs, either separately or globally, digital thru-mode, operation over a wide voltage range and many more features make the QS truely unique.
The ADI-8 QS is RME's reference - highest performance in every detail, at an unbeaten price/performance ratio!
The most important features of the QS:
In the QS RME uses a high-class AD converter from Cirrus Logic, offering exceptional Signal to Noise and distortion figures. But the biggest difference to all other ADCs out there is its innovative digital filter, achieving for the first time a delay of only 12 samples in Single Speed (0.25 ms), 9 samples in Double Speed (0.09 ms), and 5 (!) samples in Quad Speed (0.026 ms).
These values are less than a quarter of those available from even much more expensive devices. They represent an important step in further reducing the latency in the computer-based recording studio. At DS and QS the added latency can simply be ignored. The DA-converter offers similar conversion in the range of 5 to 10 samples, turning analog digital monitoring into real analog-style monitoring!
The I64 MADI Card extends the QS with a 64-Channel MADI input and output and a sophisticated digital patch mode.
The card has an optical and a coaxial MADI input, which is switched automatically according to where a valid input signal is detected. This ensures full redundancy by immediately changing to the other input in case of signal loss. Coaxial and optical output operate in parallel, delivering the same data.
MADI can be used as an optional clock source (Clock section, OPTN), as signal source of the DA-converter, target of the AD-converter, and as digital thru. Since each QS converts only 8 channels, up to 56 channels can be passed through. This technique is used to serially cascade several QS converters. Incoming MADI data is passed through unchanged, only one block of eight channels is replaced. This allows up to 8 devices to be connected serially, with all 64 combined channels available at the last device's MADI output. When multiple devices are connected serially, the function Delay Compensation removes sample offsets between the units.
The QS can also be remote controlled via MADI, and send/receive MIDI data via MADI.
Additionally the i64 card enables a digital patch mode, that allows free routing of all I/Os based on blocks of 8 channels (needs i64 MADI card with Sync LEDs and firmware 3.x or up). In this mode, the 8 analog channels, AES, ADAT input 1 and 2, and 8 x MADI are available as input sources for the same number of outputs. The unit then works as digital format converter, rebuilds a MADI signal from various sources, inserts, converts and much more at the same time. Please read the QS manual for more detailed informatio
Input AD: 1/4" TRS jack and 25 pin D-sub, servo balanced, completely symmetrical audio path
Output AD: 4 x AES/EBU, 2 x ADAT optical, optional MADI
Input DA: 4 x AES/EBU, 2 x ADAT optical, optional MADI
Output DA:1/4" TRS jack servo balanced, up to +21 dBu. 25 pin D-sub, balanced, up to +24 dBu. DC-coupled audio path
Dynamic Range AD: 117 dBA
THD AD: < -110 dB (< 0.00032 %)
THD+N AD: < -104 dB (< 0.00063 %)
Crosstalk AD: > 130 dB
Dynamic Range DA: 120 dBA unmuted
THD DA: < -104 dB (< 0.00063 %)
THD+N DA: < -102 dB (< 0.0008 %)
Crosstalk DA: > 110 dB
Input level for 0 dBFS: +24 dBu, +19 dBu, +13 dBu, +4.2 dBu, each adjustable by 6 dB in steps of 0.5 dB via Digital Input Trim
Output level for 0 dBFS: +24 dBu, +19 dBu, +13 dBu, +4.2 dBu, each adjustable by +/- 6 dB in steps of 0.5 dB
Output level global: 0 down to -96 dB in 48 steps
Sample rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, variable (sync/word)
Frequency response AD/DA, -0.1 dB: 10 Hz - 23.2 kHz (sf 48 kHz)
Frequency response AD/DA, -0.5 dB: < 5 Hz - 44.6 kHz (sf 96 kHz)
Frequency response AD/DA, -1 dB: < 5 Hz - 63.4 kHz (sf 192 kHz)
Power supply: Internal switching mode ps, 100 V-240 V AC
Dimensions (WxHxD) 483 x 44 x 200 mm
Warranty: 2 years