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Unison Enabled

  • Overview
  • Features
  • Customer Reviews
  • 4.9/5

Regular Price: $299.00


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The larger-than-life sound of pop, hip-hop, and R&B — now on UAD.

The dominant player in chart-topping pop, hip-hop, and R&B productions, Avalon's flagship VT-737 channel strip is the best-selling standalone channel strip ever made. From Jay-Z and Dr. Dre, to Babyface and Beyonce, to Eric Clapton and The Rolling Stones, the VT-737 delivers consistently polished results, with radio-ready gloss and detail.

Exclusively for UAD hardware and UA Audio Interfaces, and fully endorsed by Avalon Design, the Avalon VT-737 Tube Channel Strip plug-in captures the entire hit-making essence of the channel strip that defined the sound of modern music.

Track and mix through an exacting emulation of the Avalon VT‑737 analog channel strip

Get the full character of the original hardware’s tube mic preamp with Unison technology

Add legendary Avalon gloss and presence to bass, vocals, voice‑over, and more

Sculpt your sources with a vocal‑flattering optical compressor

Tweak sounds with four-band EQ and add high‑end detail with 32k "air" band

Mix with artist presets from Eric J Dubowsky, (Flume, Odesza), Hector Delgado (A$AP Rocky, Lana Del Rey), Michael Brauer (Coldplay, My Morning Jacket), and more

Take a Listen

Take a Listen
Capturing the Sound of Modern Music

Capturing the Sound of Modern Music

After carefully auditioning multiple Avalon 737 hardware units, the UA team selected a "golden unit" with the ideal optical compression response. UA's DSP team then artfully captured the target hardware's class-A tube amplifier section with custom-wound transformer, LED-style optical compression, and discrete four-band EQ — the signature Avalon sound heard on thousands of chart-topping hits.

Unison<sup>™</sup> Technology for UA Audio Interfaces

Unison Technology for UA Audio Interfaces

Harnessing UA’s groundbreaking Unison technology, the Avalon VT-737 plug-in captures the hardware’s mic preamp impedance, gain stage “sweet spots,” and exact circuit behaviors, giving you all the detailed sonics of the original Avalon hardware — including its gentle high-pass filter for removing mud and low-end gunk. And because the VT-737's front-panel Hi-Z input is a legendary bass DI, the VT-737 plug-in's Unison-enabled Hi-Z input endured rigorous evaluation, ensuring it was virtually indistinguishable from the original hardware.

Versatile Optical Compression

Versatile Optical Compression

Excelling on vocals, bass, acoustic guitar, and voice-over work, the VT-737 plug-in's dynamics section emulates the hardware's gentle touch, rather than adding squash or crunch. Its relatively transparent compression also make it perfect for "stacking" the compressor again at mixdown, expertly controlling the dynamics of a vocal in a dense mix. An exclusive plug-in only, super-fast mode gives you “X4” faster attack, pushing the VT-737 beyond its physical limits, affording you tons of new dynamic versatility.

EQ with Details

EQ with Details

The Avalon VT-737 Tube Channel Strip plug-in expertly emulates the hardware's discrete four-band EQ, allowing you to sculpt lead vocals with a visceral, larger-than-life presence and sophistication, placing them front-and-center in any mix. Like the hardware, the EQ can easily be placed before or after the compressor, and the mid bands can be engaged as sidechain filters for laser-focused compression. And with the 32k high frequency "air band," you can add delicate shimmer to everything from strings to background vocals to acoustic guitars.

Add Chart-Topping Sheen with Any UAD Hardware

Add Chart-Topping Sheen with Any UAD Hardware

Of course, the Avalon VT-737 Tube Channel Strip isn’t just for UA Audio Interface owners. UAD hardware owners can use the VT-737 Tube Channel Strip plug-in on any mix, giving your sources legendary fat bottom, "glassy" top-end textures, and a bevy of clear-eyed color — without ever going outside the box.

Key Features

VT-737sp exclusively licensed by Avalon Design, modeled by Universal Audio

Made famous as the ultimate pop, R&B and hip-hop performance and production tool specializing in tight, focused vocals and bass guitar

Best of Avalon's design: high headroom tube mic preamp, optical compressor, and discrete four-band EQ

Feedback-style 58 dB tube mic preamp with Mic, Line, or Hi-Z input with Unison technology

Models entire VT-737sp “Special Performance” circuit path, including transformers, tube amplifiers, active and passive EQ filters, and optical gain reduction

Compressor Sidechain Unlink/Link and EQ Pre-Dynamics, EQ Sidechain filtering, Hi Q and Frequency multiplier

Physical input impedance and front panel control of gain staging and other preamp parameters via Unison

Customer Reviews

Avalon VT-737 Tube Channel Strip

Overall Rating


K. il

August 18, 2023

avalon vt737sp Review

난 실제 아발론 vt737sp를 가지고있었다.마이크는 u87ai 를 사용했고 오디오 인터페이스는
rme fireface 800을 사용했었다. 시스템을 아폴로트윈으로 교체하면서 vt737sp plugin을 사용해보고 실제 vt737를 판매하였다. 그만큼 근접한 뉘앙스를 내주었다 훌륭한 플러그인이다.

j. whelan

August 13, 2023

AV 737

This thing is smooth and I love the comp for gentle tracking squeeze db or so. This is in my chain 50% of the time if tracking via the UAD

A. Borges

July 25, 2023

Better Impossible

A plugin with great sound, texture and precision, simply Fantastic

C. M

July 24, 2023

Avalon VT-737 Tube Channel Strip

Yes excellent, Just putting a signal path through it. Brings any sound into focus!!!

M. Hui

July 17, 2023

Surprisingly Faithful to the hardware

I have had the hardware 737 for many years in the studio. For those considering the hardware unit save your money, A/B this plugin and the difference to my ears anyways is so marginal that I recently just sold mine and leaning towards moving to in the box mixing and recording.

A. Ayer

July 17, 2023

Tracking magic

This is the greatest channel strip for tracking. Put it in the unison spot (or not if you don’t want to commit). The gentle compression will sound transparent but stop overload and the tube harmonics are beautiful. Vocals, bass and acoustic guitar seriously shine.

M. Tomlinson

July 16, 2023

Vocal Pre-amplification

Simple to use. I used it mostly for the pre-amp for vocal takes. It does wonderful on BVGs. Nice tube warmth up front.


July 15, 2023

Sounds great !

What a cool emulation !!! It sounds really precise and pristine ,with fantastic and various possibilities. I'm stunned by the richness it supplies on voices . Impressive plugin

R. Byers

July 13, 2023


Rap, Pop, Country, you name it - this unison pre delivers all the pro shine and sheen you need!

J. Miller

July 13, 2023


Been eyeing this for a while and finally grabbed it. Tracked a vocal with it for the first time and my purchase was justified. Didn't have to do much to the recording during the mix, as it came in sounding killer. The high-end is so musical. Also been putting my electric bass through it. Very impressive plugin!

E. bartlett

July 8, 2023



D. Pal

June 30, 2023

Its a very nice and helpful channel

The VT737 is a very nice channel plugin, from clear sound to a nice mellow warmth, vocals are easy to record and mix. It's a Go to for me to mix entire vocal tracks quickly and accurately with just one channel and a good allround solution for a more modern sound.


June 30, 2023

increíble sonido

muy feliz por el resultado en las voces, tiene un color muy agradable y moderno muy satisfecho y muy recomendado


June 30, 2023

increíble sonido

muy feliz por el resultado en las voces, tiene un color muy agradable y moderno muy satisfecho y muy recomendado

A. Jemison

June 29, 2023

Audio Engineer, Producer, Songwriter

I have wanted this preamp for a long time. Now that it’s available as software. I can’t express how excited I’ve become about this product! Thanks!!

J. Mateo

June 28, 2023

Very glassy and flexible

This thing really captures a avalon tone. the eq is very clean and the compressor really does smoothly control dynamics. overall I love it with vocals that need just that shine and subtle control that avalon can do very well

M. Vila Nova

June 23, 2023

Really voice centric

I've used other UA channel strips before and I absolutely love them. Recently decided to go with Avalon VT-737 Tube Channel Strip and a vintage AKG D12 dynamic mic for recording spoken words for a small poem and was absolutely delighted with the results. Silky, fat and cutting well above the music backtrack in an effortless and very pleasant way, right from the recording! Love it!

J. Vranken

June 22, 2023

A real must have for me

It just gives the right punch and sits so well in the mix. I use it on loads of tracks. Nothing better so far except the real hardware.

B. Bekka

June 20, 2023

Avalon VT-737 Tube Channel Strip

It parfect Plugin

A. Koilybayev

June 17, 2023


I really liked this plugin, it literally breathed life into my microphone. Very happy with the purchase.