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Quick Overview

The TL Audio Ebony A2 is a sleek looking discrete Class A and Tube Stereo Processor designed to heighten your audio experience.

  • Description
  • Additional Information

TL Audio Ebony A2 Discrete Class A and Tube Stereo Processor Product Description

The TL Audio Ebony A2 is a sleek looking discrete Class A and Tube Stereo Processor designed to heighten your audio experience. The TL Audio Ebony A2 uses Discrete Class A circuitry and have an optional tube stage with variable drive putting you in control of how ‘creamy' or how ‘cool' your unit sounds.

The Ebony A2 is hand assembled in England to the highest standards, and uses stylish, quality chrome knobs together with a high gloss black finish to make the exterior look just as smooth as the circuits sound.

The Ebony A2 has all the features you come to expect with TL Audio, including balanced I/O, multi input options, analogue VU metering and intuitive, precise controls.

The TL Audio Ebony A2 is also compatible with the TL Audio DO-2 digital SPDIF interface for easy digital connectivity with high quality conversion.

Why Class-A ?

Class A circuits are designed with a constant current flowing through all of the transistors, which is sufficient to drive the peak output required from each block of the circuit. This ensures that every transistor is kept at its optimum operating point, minimising nonlinearities due to changes in current and internal thermal effects, and eliminating the objectionable “cross-over” distortion typical of class AB circuits.

Due to the higher steady state (or “quiescent”) currents used, the power dissipation of class A circuits is substantially higher than can in general be handled by integrated circuits. It is also possible to design discrete transistor circuits to operate at higher voltage rails than are available for audio integrated circuits, adding the benefit of greater headroom and improved dynamic range. For these reasons, there are no integrated circuits in the audio paths of the Ebony A2.

The outstanding audio quality is reflected in the technical specification of the units, with particularly low noise and distortion, and wide frequency response.


TL Audio Ebony A2 Key Features:

  • Discrete Class A and Tube Stereo Processor
  • Balanced inputs and outputs
  • Stereo operation
  • Switchable tube stage with rotary drive control
  • 3 band EQ with swept mid
  • Compressor section with variable ratio, threshold, attack, release, knee and gain make up.
  • EQ switchable pre and post compression stage
  • Analogue style VU metering for level / gain reduction
  • +10dB metering for use with DAW
  • Compatible with DO-2 card for SPDIF digital output


TL Audio Ebony A2 Specifications:

  • 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 40KHz, +0, -0.5dB
    Distortion: 0.007% @ 1KHz, +4dBu @ 0dB gain
    Distortion (THD + Noise): 0.025%, 10Hz to 40KHz,
    Noise: -94dBu, 22Hz to 22KHz, @ 0dB gain at input and output.
  • Outputs:
    Gain Range: +/-20dB
    Maximum Level: +22dBu (2Kohm load), +26dBu (10Kohm load)
  • Tube Stage:
    Typical Distortion: 1% to 10%, depending on “Drive” level, predominately
    second harmonic
    Noise: -88dBu (22Hz to 22KHz), output gain @ 0dB.
  • 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
    Mid: +/-15dB, swept 150Hz to 7KHz, Q = 0.7
    HF: +/-15dB @ 12KHz, shelving,
    “Pre” and “Sidechain” (Compressor) switches.
  • Metering:
    Tube “Drive” LEDs: Variable intensity over 10dB level range, typically corresponding
    to 1% to 5% THD.
    Tube “Peak” LEDs: Dependant on level and drive, typically corresponding to 10% THD.
    Output “Peak” LEDs: +19dBu on output.
    VU Meter: Switchable to Channel A or B, Input or Ouput, and 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 32VA.
  • 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.
    Shipping weight: 6Kg.

TL Audio Ebony A2 Discrete Class A and Tube Stereo Processor Additional Information

SKU TLA0033
Brand TL Audio
Condition New
Colour Black