TL Audio A1 este un preamplificator dual de microfon cu tuburi ce, datorita circuitului discret clasa A, ofera o inalta calitate a sunetului, nivel de zgomot extreme de scazut si un excelent raspuns in frecventa. Sunetul cald al tuburlor poate fi inclus in stagiul de preamplificre in orice proportie, C1 devenind astfel o unealta versatila, potrivita multipleor nevoi ale studiourilor de inregistrari modern.
Specificatii tehnice
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, -0.5dB, @ 40dB gain,
Distortion (THD + Noise): 0.025%, 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.
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 Channel 1 or 2, and Input or Ouput.
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 34VA.
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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