Joseph Crowe

Preamplifier No.2310

Name: Preamplifier No.2310
Brand: Joseph Crowe
Price: 9400.0 USD
Availability: InStock

Product variants

$9,400.00 USD

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

Our preamplifier uses a dedicated dual mono high-voltage B+ supply for maximum dynamic reserve, alongside dual mono ultra-low-noise DC-regulated filament power for the directly heated triodes, ensuring a silent noise floor and maximum micro-detail retrieval.

Ordering

Made-to-order
90 Day construction lead time
$9,400.00 USD plus shipping
Optional front face material (Hardwood or powder coated aluminum)
- Various wood species available (Walnut, birch, cherry)
- Various powder coat metallic colors available (Charcoal, Black, Silver, Forest Green etc.)
- Custom decal colors
  - Black metallic with yellow or white letters
  - Brushed aluminum with black letters

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 true differential architecture)
Expressive dynamics especially in the vocal region (all stages are discretely powered and directly heated)

Features

Zero feedback design
Transformer coupled (no capacitors in the signal path)
Directly heated regulated filament supply
Custom Cinemag output transformers
Toroidy chokes and power transformers
Khozmo Dual-Mono 64-step with Remote Control 4-Source Sequential Selector
- Ladder type
- Detent rotary knob (1dB increments)
- Vishay fixed resistor attenuation
Naked foil resistors (click here)

Black anodized aluminum remote with left/right channel volume
- Input selection
- Mute
- Left/right independent volume control
- Optional hardwood body (please contact)

Low Noise Chassis
- Separate enclosures for power supply, attenuation board, and output tubes
  - 3mm thick mild steel enclosure for power supply
  - 3mm thick mild steel enclosure for Khozmo Attenuation Board
    - Mechanically isolated using suspension system (see photo)
  - 3mm thick copper for output tubes mounting plate
    - Mechanically isolated using suspension system (upper section in photo)
    - Mechanical and EMF isolation for extremely low microphonics