TL Audio A4 - Manual (Page 13)

13
SPECIFICATIONS
Inputs:
Balanced, via 3 pin TRS jack, or 25pin D-Sub per 8 channels.
Input impedance: greater than 10Kohm.
Nominal Level +4dBu or -10dBu, switched in banks of 8
channels.
Pan Controls:
-3dB at centre.
Attention when panned fully left or right: 60dB.
Tube Stage:
Switchable tube stage on stereo mix, pre insertion point.
“Warmth” control varies THD from typically 0.3% to 10%,
predominately second harmonic.
Insertion Point:
Balanced, via separate 3 pin TRS jack send and return.
Nominal level +4dBu or -10dBu.
Drive LEDs:
Variable intensity, from 0dBu to +12dBu, indicating increasing
Tube drive.
Tube Peak LEDs:
Illuminates when tube stage is overdriven into clipping.
Master Level:
Maximum Gain +6dB.
Output Peak LEDs: Located above VU meters, illuminate at +22dBu on output
at +4dBu nominal level, or +8dBu at -10dBu nominal level.
Outputs: Balanced, via 3 pin XLR connectors.
Nominal level +4dBu or -10dBu.
Maximum Level: +26dBu, Input to Output @ 0dB gain and +4dBu nominal
level.
Frequency Response: +0, -1dB, 10Hz to 25KHz.
Distortion:
0.012% at 1KHz.
0.05%, 20Hz to 20KHz.
(At +4dBu input and output and 0dB gain, tube stage out).
Hum and Noise:
-83dBu unweighted, at 0dB gain and +4dBu nominal level.
VU Meters:
Illuminated moving coil, 0VU = +4dBu (or -10dBu).
“+10dB” switch shifts 0VU to +14dBu (or 0dBu).