Great condition, very clean. Made in England.

TL Audio Ebony Series A1 Dual Tube Preamp/DI Features:

• Discrete Class A and tube dual preamp/DI
• Two discrete Class A preamps
• Two DI inputs for high-/low- impedence instrument input
• Phantom power
• 30dB pad
• 90Hz highpass filter
• Phase reverse
• Switchable tube stage with rotary drive control on each channel
• Output gain stage
• Analog-style VU metering
• +10dB metering for use with DAW

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

• Detachable IEC power cord
• Dimensions: 2U; 19" W x 7.9" H x 3.5" D, behind front panel
• Weight: 13.2 lbs.