Universal Audio Avalon 737sp Channel Strip

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$39.00 to $3,866.00

5.0 (3)

1 Review

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Page last updated Jul 04, 2026

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4.5 (40)

$3,866.00

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$39.00

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Description

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The Universal Audio Avalon 737sp Channel Strip is a powerhouse of audio engineering, meticulously crafted for those who demand nothing less than excellence in studio recording. This channel strip is a fusion of vintage warmth and modern precision, making it an essential tool for professional producers and audio engineers. Its Class A preamp design captures every nuance of your sound, while offering versatile input options including microphone, instrument, and line inputs. This ensures you have the flexibility needed to handle any recording situation with ease.

The opto-compressor is a standout feature, providing smooth and natural compression that preserves the integrity of your audio. Whether you're aiming for subtle dynamic control or aggressive limiting, the VT-737sp delivers with finesse. The EQ section is no less impressive, boasting sweepable mid-bands and high-low frequency enhancements that allow you to sculpt your sound with precision. Notably, the EQ can be positioned pre or post-compression, giving you creative control over your signal chain.

Built with Avalon's renowned rugged construction, the VT-737sp is designed to withstand the rigors of the studio environment while delivering unparalleled sonic performance. Its dual vacuum tube triodes and discrete Class A circuitry ensure low noise and high fidelity, making it ideal for both digital and analog recording setups.

Key Features:

Class A preamp design with microphone, instrument, and line input options
Opto-compressor with dynamic control and side-chain EQ
Sweepable EQ with dual mid-bands and frequency multipliers
Dual vacuum tube triodes for warm, rich audio quality
Rugged construction for enduring professional use

Product specs

Preamp Type	Tube
Number of Channels	1
Phantom Power	Yes
EQ	Yes
Compressor	Yes
Frequency Response	10Hz-120kHz
Analog Inputs	1 x XLR (mic), 1 x XLR (line in), 1 x 1/4" (Hi-Z)
Analog Outputs	1 x XLR (line out)
Other I/O	1 x 1/4" (link)
Rack Spaces	2U
Height	3.5"
Depth	12"
Width	19"
Weight	22 lbs.

FAQs

What are the standout features of the Avalon VT-737sp Channel Strip?: The Avalon VT-737sp features a Class A vacuum tube preamp, an opto-compressor, and a four-band EQ, making it ideal for professional vocal and instrument processing. Its tube design provides warm, rich tones, and its comprehensive controls offer precise sound shaping.
Is the Avalon VT-737sp suitable for recording both vocals and instruments?: Yes, the Avalon VT-737sp is designed for versatile use, making it suitable for both vocals and instruments. Its tube preamp and EQ capabilities allow for detailed sound customization, enhancing the quality of various audio sources.
Does the Avalon VT-737sp Channel Strip provide phantom power for condenser microphones?: Yes, the Avalon VT-737sp includes phantom power, making it compatible with condenser microphones that require external power to operate.
How does the compressor in the Avalon VT-737sp function?: The Avalon VT-737sp features an opto-compressor, which uses an optical element to control dynamics smoothly and musically. This type of compressor is known for its transparent compression, maintaining the natural sound of the audio source.
What are the connectivity options available on the Avalon VT-737sp?: The Avalon VT-737sp offers a variety of connectivity options, including XLR inputs for mic and line, a 1/4" Hi-Z input for instruments, and an XLR line output, making it versatile for studio setups.

Videos

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Mixing With Mike

UA - Avalon VT-737sp Tube Channel Strip Mixing With Mike Plugin of the Week

Mixing With Mike

Comparing a Unison (UAD) plugin to my real Avalon 737

LeoMakes

Avalon 737 Legendary Vocals with SC Mids Mode

Sean Divine

Avalon 737sp Vocal Sounds and Review with Neumann U87 Microphone

Lucas Messore

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Universal Audio Avalon 737sp Channel Strip.

Setup and maintenance

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The Avalon 737sp's compressor is noted for being slow; a low ratio (1.5-2:1) with fast attack and release is recommended for better performance.
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Recording in a closet with clothes can be problematic; using heavy blankets and stands to create a makeshift booth is recommended for better sound capture.
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Users suggest trying distortion modes on the Distressor in HP mode to add life to a vocal chain involving the Avalon 737sp.
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Features and functionality

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Users found the EQ on the Avalon 737sp flexible, though described as "fiddly," and suggested using the air band for RnB vocals.
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Use cases and applications

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The Avalon 737sp, when paired with a Neumann U87, was a preferred chain for hip-hop/R&B vocals in early 2000s Atlanta, providing a professional standard sound.
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The Avalon 737sp is preferred for tracking vocals, offering a more complete sound directly into the DAW, reducing reliance on additional plugins.
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Comparisons

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The Avalon 737sp's compressor might not handle significant gain reductions seamlessly, unlike other vocal compressors, but remains usable for certain applications like bass guitar.
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Users report the Avalon 737sp hardware provides a more authentic tube sound with smoother high end and better low-end integration compared to the UAD plugin.
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Avalon 737sp can make vocals sound thin and plasticy, contrasting with Neve-style pres which offer more apparent low and low-mid harmonic content.
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Neve-style pres may pair better with brighter vocal mics like the Sony C800G or Manley Ref C, unlike the Avalon 737sp, which may flatten high frequencies.
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Mods and upgrades

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Adding a standalone outboard stereo compressor, such as an SSL G Buss Comp or SSL Fusion, is suggested for enhancing the stereo/mix buss beyond the Avalon's built-in features.
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Software and compatibility

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The UAD plugin offers practicality and portability, beneficial for quick setups or mobile recording situations where hardware isn't feasible.
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User experience

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Owners of both the hardware and UAD plugin note that the perceptible differences are minimal in mixes, with the hardware offering a slightly elevated top end.
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Users find that Avalon 737sp adds an unwanted air layer over vocals, even without boosting high end, making it challenging to achieve a fat-sounding low end.
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Value and pricing

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Some users argue that if the hardware and plugin were identical in performance, the pricing would reflect this and hardware would be obsolete.
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Considerations for trading Avalon 737sp for BAE 1073mp involve potential value loss, as the BAE is valued lower, around $1500 Canadian new.
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5.0 out of 5

Based on 1 Review and 3 Ratings

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rossmotus

565

over 2 years ago

Excellent

Of course it's not the same matter of its original hardware counterpart but this plugin version is really excellent and it make a great job in all type of sounds (drums, bass, vocals, pads, etc.). Personally I like it so much and it's active in every track I do. (sorry for my bad english)