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Joseph Crowe

Preamplifier No.2310

$9,400.00 USD
$9,400.00 USD
Sale Sold out

Preamplifier No.2310 is a fully balanced directly heated triode designed in collaboration with Don Sachs and Lynn Olson (under license). 

Ordering

  • Made-to-order 
  • 90 Day construction lead time 
  • $9,400.00 USD plus shipping 

Sound Characteristics 

  • Lifelike presentation of instruments and vocals (Sound signature of the NOS 2P29L Russian Radio Tubes)
  • Extremely low noise floor (achieved with fully balanced architecture)
  • Expressive dynamics especially in the vocal region (all stages are discretely powered and directly heated) 

Features 

  • Zero feedback design 
  • Directly heated regulated filement supply 
  • Custom Cinemag power supply and output transformers 
  • Khozmo Dual-Mono  64-step with Remote Control 4-Source Sequential Selector
    • Ladder type 
    • Vishay resistors 
    • Intelligent start-up 
    • Detent rotary knob (1dB increments)
  • Anodized aluminum remote with left/right channel volume 
    • Input selection 
    • Mute 
    • Left/right independent volume control 
    • Optional hardwood body (please contact) 
  • Low Noise Chassis 
    • Seperate enclosures for power supply, attenuation board, and output tubes 
      • 6mm thick mild steel enclosure for power supply 
      • 6mm thick mild steel enclosure for Khozmo Attenuation Board
        • Mechanically isolated using suspension system (see photo) 
      • 6mm thick copper for output tubes mounting plate
        • Mechanically isolated using suspension system (upper section in photo) 
        • Mechanical and EMF isolation for extremely low microphonics 

  • High mass low friction rotary volume knob 
    • Detent operation with 1dB increments 
    • Push selection for toggling inputs 
    • Dual ball bearings for quality feel 
  • Backlit LCD screen 
    • Amber text 

Specifications

  • Frequency Response: 18Hz - 30kHz +/- 0.5dB
  • Power Draw: 45W
  • Output impedance: 293 ohm
  • 13dB gain @ full power
  • XLR: 2 Input (pair) / 1 output (pair)
  • RCA: 2input (pair) / 1 output (pair)

Physical 

  • 460mm wide x 285mm tall x 373mm deep 
  • (18.11" x 11.22" x 14.68")
  • 25Kg (55 lbs) 

Click image below for PDF drawing