Accutronics AccuVerb

AccuVerb Dual Channel Tube Spring Reverb

The Accutronics AccuVerb is a rare, all-tube stereo spring reverb unit, revered for its rich, vintage sound and versatile controls. Equipped with dual channels, LED VU meters, and adjustable input/output levels, it’s designed for professional audio use. Renowned as one of the best spring reverbs ever made, it remains highly sought-after for its exceptional sound quality.

AccuVerb Dual Channel Tube Spring Reverb Details

The AccuVerb is a rare and highly regarded all-tube stereo preamp and spring reverb unit, it is also considered one of the very best spring reverbs ever made.

Produced in limited quantities – some estimates suggesting fewer than 100 units – this unit delivers a warm, vintage sound through its dual-channel design, making it a sought-after piece for musicians and recording engineers.

Renowned for its use of 12AU7 tubes, the AccuVerb provides rich tonal depth and exceptional reverb character.

AccuVerb Features:

  • Channel 1 & 2 Input Level: Controls the input drive level, designed for both professional and semi-professional gear. Each channel is equipped with LED VU meters for quick visual reference. The “Pull Dry” option sends the dry signal to the output mix.
  • Source Control: Allows balance adjustments between Channel 1 and Channel 2 for reverb input drive.
  • Length Control: Adjusts the decay time, effectively altering the “room length.” The “Pull Boost” option enhances low frequencies.
  • Width Control: Combines or separates reverb outputs to modify the “room width.” The “Pull Bright” option simulates a “lower ceiling” effect for a different reverb tone.
  • Mix Control: Regulates the amount of reverb signal in the output. The “Pull Dry” function blends the reverb with the dry signal.
  • Output Level Switch: The -10 dB position reduces output levels for equipment that cannot handle full line-level signals.
  • Channel 1 & 2 Output Levels: Controls the output levels for each channel, with LED VU meters for visual monitoring.
  • Power On/Off Switch: Illuminated for easy visibility.
  • Input and Output Jacks: Equipped with balanced stereo 1/4″ jacks that run parallel with XLR jacks for both input and output on each channel. Unbalanced 1/4″ plugs can be used without causing damage.
  • Power Requirements: Configured for 120 Volts AC. It uses a 1 amp 250 V slow blow fuse (20.5 mm x 0.8 mm).

 

The release date shown for the AccuVerb is a guestimate only, based on very little documentation available. If you have more accurate information, please contact us.

Specifications

  • Channel 1 & 2 Input:
    • Balanced: XLR parallel with 1/4″ stereo
    • Input impedance: 3.6 kΩ
    • Nominal input level: +4 dB (line level)
    • Max input level: +23.81 dB
    • Max input stage headroom: +29.57 dB
    • Input stage gain: +6 dB (input level control max)
    • Input level min. (0): -60.8 dB (0 dB in)
    • Input level max. (10): +6 dB (0 dB in)
  • Channel 1 & 2 Output:
    • Balanced: XLR parallel with 1/4″ stereo
    • Output impedance: < 200 Ω
    • Nominal output level: +4 dB (line level)
    • Max output level: +22.9 dB
    • Max output stage headroom: +29.57 dB
    • Output stage gain: +3 dB (output level max)
    • Output level min. (0): -57.7 dB (0 dB in)
    • Output level max. (10): +3.8 dB (0 dB in)
  • Frequency Response: Designed to match spring reverb
  • Pre-Amp Frequency Response: Transparent
  • S/N Ratio: Minimum 66 dB (reverb out)
  • Dimensions: 483mm x 89mm x 384mm
  • Weight: 6.96 kg

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The details provided above are drawn from historical documents like advertising brochures or user manuals. They’re shared without bias or review. This info is given solely for your consideration, helping you gauge its usefulness to you.

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