A3 este un channel strip ce incorporeaza in aceeasi unitate avantajele cunoscutelor preamplificatore, compresoare si egalizatoare TL Audio. Avand acelas design cu circuit discret clasa A si tuburi, A3 este foarte versatil si are toate calitatile necesare pentru a deveni principalul canal de voce in orice studio.
Specificatii tehnice
Line Inputs
Discrete Class A circuitry from input to output (unless Tube stage In),
Gain Range: -20dB to +20dB,
Maximum Input level: +26dBu,
Frequency Response: 10Hz to 35KHz, +0, -1dB,
Distortion (THD + Noise): 0.03%, 20Hz to 40KHz,
Noise: -85dBu, 22Hz to 22KHz, @ 0dB gain at input and output.
Instrument Input:
Tube input stage, plus discrete Class A circuitry to output,
Gain Range: +8dB to +40dB (�High�), -10dB to +22dB (�Low�),
Input Impedance: 1Mohm (�High�), 70Kohm (�Low�).
High Pass Filter:
-3dB @ 90Hz, second order.
Compressor
Threshold Range: -20dB to +10dB,
Ratio Range: 2:1 to 20:1,
Attack: 1ms (�Fast�), 8ms (�Slow�),
Release: 200ms (�Fast�), 2s (�Slow�),
Knee: �Hard� and �Soft� settings,
Gain Make-Up: 0dB to 20dB.
Equaliser
LF: +/-15dB @ 80Hz, shelving,
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Mid: +/-15dB, swept 150Hz to 7KHz, Q = 0.7,
HF: +/-15dB @ 12KHz, shelving,
�Pre� and �Sidechain� (Compressor) switches.
Mic Input:
Discrete Class A circuitry from input to output (unless Tube stage In),
Gain Range: +16dB to +60dB (-14dB to +30dB with pad),
Maximum Input level: +10dBu (without pad), +30dB (with pad),
Frequency Response: 10Hz to 40KHz, +0, -1dB, @ 40dB gain,
Distortion (THD + Noise): 0.035%, 20Hz to 20KHz @ 40dB gain,
Noise (EIN): -127dBu unweighted, 22Hz to 22KHz, 150 ohm source termination.
Instrument Input
Tube input stage, plus discrete Class A circuitry to output,
Gain Range: +8dB to +40dB (�High�), -10dB to +22dB (�Low�),
Input Impedance: 1Mohm (�High�), 70Kohm (�Low�).
High Pass Filter
-3dB @ 90Hz, second order
Insertion point
Pre Compressor and EQ,
Balanced, separate Send and Return TRS jack sockets,
Nominal Level: 0dBu,
Noise -85dBu, 22Hz to 22KHz.
Output Gain
Maximum Gain +15dB,
Output
Maximum Level: +22dBu (2Kohm load), +26dBu (10Kohm load),
Noise at minimum gain: -90dBu (22Hz to 22KHz)
Tube Stage
Typical Distortion: 1% to 10%, depending on �Drive� level, predominately
second harmonic,
Noise: -80dBu (22Hz to 22KHz), output gain @ 0dB.
Metering
Tube �Drive� LED: Variable intensity over 10dB level range, typically corresponding
to 1% to 5% THD.
Tube �Peak� LED: Dependant on level and drive, typically corresponding to 10%
THD.
Output �Peak� LED: +19dBu on output.
VU Meter: Switchable to Input, Ouput or Gain Reduction.
Nominal calibration: 0VU = +4dBu.
+10dB switch calibration: 0VU = +14dBu.
Power Requirements:
Internally set to 230V 50Hz or 115V 60Hz operation,
Detachable IEC power cord,
Power consumption 28VA.
Dimensions
2U, rack mounting or free-standing.
W x H x D = 483mm x 88mm x 200mm (19.0� x 7.9� x 3.5�), behind front panel
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