Avalon Design VT-737sp
Tube mic preamp + opto-compressor + sweep EQ channel strip
Channel Strip$4,295Manufacturer list price
Specifications
- Type
- Channel Strip
- Description
- Tube mic preamp + opto-compressor + sweep EQ channel strip
- Topology
- Tube/valve preamp (4x Sovtek 6922 dual-triode) cascaded with 100% discrete high-voltage Class-A opto-compressor and Class-A discrete sweep EQ; transformer-balanced mic input
- Signal path
- Analog
- Channels
- 1
- Channel format
- mono (rear-panel link cable enables 2x units for stereo tracking)
- Form factor
- 19-inch rackmount
- Rack units
- 2U
- Powered
- true
- Power (W)
- 75
- Frequency response
- 10Hz-40kHz +/-0.2dB (band-limited); unit bandwidth 1Hz-200kHz -3dB (line input)
- Impedance (Ω)
- Mic input 850 ohm transformer-balanced; instrument input 1 meg ohm unbalanced; line input 20k ohm balanced; output 600 ohm balanced
- Country of manufacture
- USA
- Phantom power
- 48V
Details
Controls: Mic/inst/line input select, high-gain switch, variable high-pass filter, phase reverse, compressor threshold/ratio/attack/release, EQ-to-sidechain switch, 4-band EQ (treble/hi-mid/lo-mid/bass) with variable freq and switched Q on mids, EQ pre/post-comp switch, output trim, large VU meter (output level / gain reduction)
I/O: Inputs: mic (XLR, transformer-balanced, +48V phantom), instrument DI (1/4" front-panel jack), line (balanced XLR). Output: XLR, balanced, DC-coupled Class-A. Rear-panel stereo-link connector.
Notable use: Manufacturer describes it as a modern-classic Class-A tube channel strip "featured on thousands of the best selling (and sounding) albums"; widely regarded in the pro audio community as a standard vocal channel strip. Specific artist/album credits not stated by manufacturer, so not listed. FLAG: marketing claim, not independently verified.
Notes: Current production model per avalondesign.com/products (2026). Discontinued sibling AD2000-series/VT-747sp gear excluded as legacy/out of current lineup. price_usd = Vintage King listed MSRP $4,295 (street/sale price observed at $3,866; FLAG: manufacturer does not publish price on its own site, so dealer MSRP used as best-available USD figure). country_of_manufacture inferred from 'Made in USA' link in avalondesign.com site footer and 'Avalon Design USA, LLC' copyright line — FLAG: not an explicit on-page product claim. year_intro left blank: third-party sources place original VT-737 circa mid/late-1990s and the 'SP' revision circa early-2000s, but avalondesign.com does not state a date, so left blank per no-guessing rule.