Avalon VT-737SP
A Class A mono tube channel strip combining a transformer-coupled tube preamp, opto-compressor, and sweep equalizer in a 2U rackmount chassis.
Overview
The Avalon VT-737SP is a rackmount tube channel strip designed for professional audio recording. It integrates a dual vacuum tube preamplifier, tube opto-compressor, and a four-band sweep equalizer in a single high-voltage, discrete Class A circuit. Known for its warmth and clarity, it is particularly favored for vocal recording. The unit occupies 2U of rack space and features VU metering for signal monitoring.
Specifications
| Height | 3.5" |
| Depth | 12" |
| Width | 19" |
| Weight | 22 lbs. |
| Rack space | 2U |
| Frequency Response | 10Hz-120kHz |
| Treble | switched 10kHz, 15kHz, 20kHz, 32kHz, +/- 20dB range, shelf |
| High mid | variable 200Hz to 2k8Hz |
| Circuit Topology | Four dual triode vacuum tubes, high-voltage discrete Class A |
| Dimensions-shipping carton | 21 x 18 x 8 in (533 x 457 x 203mm) |
Design
The VT-737SP combines a transformer-coupled, dual vacuum tube preamplifier with a tube opto-compressor and a high-voltage, discrete Class A four-band sweep equalizer. It features tube-based signal path design throughout, with VU metering and front-panel controls for precise gain shaping and tonal control.
Context
The VT-737SP was celebrated in 2025 for reaching its 40th anniversary, indicating long-standing use in professional audio. Limited editions exist, including a 10th Anniversary Edition with a black panel and
Market
The VT-737SP has an MSRP of $4,295.00 and typically sells in the used market between $2,250.00 and $4,111.00.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.