Avalon V55 Microphone Preamp


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Product Code: 3368
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The Avalon V55 Microphone Preamp is an ultra-high performance professional dual channel preamplifier, DI and RE-amper.

The Avalon V55 will capture every magical performance and continues Avalon's passion and commitment to SONIC EXCELLENCE while delivering deep and controlled bass, musical midrange for enhanced vocal projection and ultra high impedence "transparent" instrument inputs.

Created for maximum versatility, the V55's sonic signature - "Deep and Controlled Bass, Musical Mid-range and enhanced Vocal Projection" combine with a unique set of user features including, 100% discrete Pure Class A amplification, Avalon's unique "passive" TONE-BANK™, professional VU meter with dual peak LED's, multiple outputs including an instrument level transformer isolated Re-amp. Designed to optimize absolute signal integrity and musical performance, the V55 is ideal for ribbon, dynamic and condenser microphones, bass guitar, acoustic instruments, electric guitars, keyboards, synthesizers, and very low output passive pickups. The state-of-the-art DI input stage provides a very-high inpedance, "zero-load" effect on sensitive pickups and keyboards, while maintaining massive input headroom to +36dB before overload.

The V55 includes a very high quality input transformer (same as the Avalon VT-737sp) with dual microphone input impedance loading for perfect mic/cable matching, high-cut switch for eliminating unwanted acoustic pickup and high frequency noise, headphone monitor amp and DC coupled, 100% Class A output amplifiers for defined bass control. A buffered "thru" output for zero-instrument-load tuners or power amp inputs, internal toroid power transformer with discrete high-voltage power supplies for low noise and sealed silver relays for transparent signal routing.

Avalon V55 Microphone Preamp Features

  • Dual Mono, Pure Class A, 100% discrete design
  • Forward musical detail and sonic excellence
  • Minimum audio signal path with 10 position extended range TONE-BANK™
  • High quality transformer input & isolated output
  • Microphone and Hi-Z inputs to +36dB
  • Very low noise -100dB
  • High headroom +30dB
  • Switched 2dB, high-gain preamplifer to +66dB
  • DC coupled Pure Class A output
  • Large illuminated professional VU meter
  • Twin LED peak signal indicators
  • Regulated +48v phantom power supply
  • Low distortion less than 0.5% THD and IMD
  • Variable passive high pass (bass cut) filter
  • All signal routing with sealed silver relays

Avalon V55 Microphone Preamp Specifictions

  • Audio Circuit Topology: 100% discrete, high-voltage, Class A, Dual-Channel
  • Gain: Switched 2dB steps, -/+ 0.2dB
  • Input Modes (4): Line, Instrument-DI, Microphone high-Z & low-Z
  • LINE (transformer): Balanced 9,000 Ω, XLR~TRS, gain -2dB~+38dB, max. input 47dB
  • INSTRUMENT ~ DI: Unbalanced 10,000,000 Ω, TRS, gain +2dB~+42dB, max. input 36dB
  • MICROPHONE HiZ (transformer): Balanced 6,600 Ω, XLR, gain +20dB ~ +60dB, max. input 23dB
  • MICROPHONE LoZ (transformer): Balanced 1,800 Ω, XLR, gain +26dB ~ +66dB, max. input 19dB
  • PAD (passive input attenuator): Line -13dB, Instrument -10dB & Microphone -15dB
  • Phantom Power: 48V regulated @10mA, blue=power ON, red=phantom ON
  • Thru output: Unbalanced, impedance buffered TRS
  • Maximum line ouput level: +30dB, DC coupled, balanced 600 Ω, XLR~TRS
  • Maximum isolated output level: +12dB transformer isolated, unbalanced
  • Headphone output: 0.5W, 600 Ω, TRS
  • Noise 20kHz, unweighted: -98dBu typical, minimum gain
  • Noise (EIN) 22Hz-22kHz: -128dB @ 40dB gain (low Z microphone output)
  • Distortion THD, IMD: 0.05% at +10dB, 0.5% at +30dBu
  • Frequency response, -/+0.5dB: 5Hz to 20kHz
  • Frequency response, -3dB: 2Hz to 500kHz (internal band limited)
  • VU Meter: Professional moving coil VU, wide range -33dB ~ +18dB
  • Signal LED's: LED peak capture, blue=0dB, red=20dB
  • High Cut Filter: -3dB at 3.7kHz minimum phase design
  • Polarity reverse (phase): All outputs (relay switched)
  • Tone Shape: Ten "passive" filter-tone selections
  • AC power: Internal toroidal AC supply, dual voltage, 115~230v selectable 50/60Hz, 35w max per channel
  • Dimensions: 19 x 3.5 x 12 in (483 x 88 x 305mm)
  • Weight-packed: 24lbs (10.9kg)

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