ART Pro Audio

The ART TubeOpto 8 is the ideal Eight Channel input / output expander for any ADAT lite-pipe equipped audio interface, direct-to-disc recorder or DAW. Eight high quality second generation discrete ClassA vacuum tube microphone preamps are packaged in a single rack space unit with eight channel 24-bit digital I/O.
Every input on the TubeOpto8 offers full control of the signal path with pad, phase and low frequency roll-off switches. Input gain and variable output level control of each channel allows up to 70dB of clean gain with incredible sonic transparency or for the tube stage to be dialed in for warming effects and soft clipping. Each channel has wide range LED meters monitor the preamp output levels while clip indicators monitor mic-preamp peak levels.
ADAT lite-pipe I/O handles eight channels of 24-bit audio input and output at either 44.1 or 48 kHz sample rates. Wordclock in and thru-puts allow multiple Tubeopto8's to be synced in complex system configurations.
Features
Eight Fully Featured Class-A Tube Mic Preamps
Eight Channels of ADAT lite-pipe Digital 24 Bit Audio I/O at 44.1 or 48kHz
Input Gain and Output Level Controls on Every Channel
Input Pad, Phase flip and Low Frequency Roll Off Switches on Every Channel
Two Additional Front Mounted High Impedance Instrument Line Inputs
Eight 1/4-inch TRS Balanced Outputs


Tubeopto 8 SPECIFICATIONS
Input Impedance
Mic..............................................................................................6.4K Ohm
Line............................................................................................20K Ohm
Instrument..................................................................................2.5M Ohm
Output Impedance
Balanced outputs........................................................................200 Ohm balanced
Frequency Response
Analog in to Digital out...............................................................12Hz - 20KHz +0, -1dB @ 44.1 KHz sample rate
THD
1KHz..........................................................................................< .015% @ -30dB ref clipping
20-20KHz...................................................................................< .033%
HPF..........................................................................................80Hz, 1-pole
Equivalent Input Noise
Mic/Line......................................................................................-130dBu, Input shorted, Max gain, A wtd.
Instrument..................................................................................-105dBu, Input shorted, Max gain, A wtd.
Maximum Input Level
Mic/line.......................................................................................+18dBu balanced w/Pad
Instrument..................................................................................+15dBu
Meter clip light............................................................................-2dB ref. A/D clip (0dB FS)
Maximum Gain
Mic..............................................................................................64dB
Instrument..................................................................................36dB
Maximum Output level
Balanced....................................................................................+20dBu
Unbalanced................................................................................+14dBu
Output level switch.....................................................................Lowers Max. Output by 10dB @ -10dBV setting
Wordclock Range..............................................................40KHz - 52KHz
Sample Rate Settings.......................................................44.1KHz, 48KHz, ADAT, Wordclock
A/D Dynamic Range..........................................................105dB (A wtd.)
D/A Dynamic Range..........................................................105dB (A wtd.)
A/D Latency.......................................................................... 0.667ms(48KHz), 0.725ms(44.1KHz), 32 samples
D/A Latency.......................................................................... 0.458ms(48KHz), 0.500ms(44.1KHz), 22 samples
Dimensions..........................................................................1.75H x 19.0W x 14.4D (44.5mm x 482.6mm x 365.8mm)
Weight.....................................................................................13.2 lbs. (6kg)
Power Requirements........................................................USA 105-125VAC, AC 60Hz, 29Watts Typical, Export units configured for country of destination.
Minimum System Requirements.................................ADAT interface port