Get 3 months of UAD Spark for 99¢. Extended thru December 31st. Learn More ›

Unison Enabled

Regular Price: $299.00


You'll Save 50%

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

B. Lynn

November 23, 2022

This is my go to for rap vocals

Unison technology mixed with the UA analog emulations are immaculate

J. Pingault

November 10, 2022

Excellent plugin

Excellent for vocals, backs and versatile for a number of other uses. Works great as a unison preamp for a wide area of uses.

O. Kempkes

October 14, 2022


As soon as you insert it is heaven

F. Pérez

October 14, 2022

Magnifico !!

Impresionado por la magnífica calidad que ofrece y el sondo tan genial que se obtiene.Comparándolo (máquina,PlugIn) difícil descubrir quien es quien.100x100 recomendable y bien barato que es para todo lo que te ofrece.


October 10, 2022

Who said perfection is not of this world

Between the Avalon and the Manley Voxbox, it's a matter of preference but you can't go wrong either way. The Avalon is legendary and your vocals will sound like a million dollars, guaranteed!

R. Donnelly

October 9, 2022

Review request

I have had the hardware version in the passed and only used the plug in for a short while and I do notice the similarities.

z. yu

October 6, 2022



D. Marais

September 24, 2022


This is simply an exquisite emulation. I don't know how the UA engineers get these hardware homages nailed 100%, but I am so grateful for their talents. Crazy good.

A. Ayer

September 22, 2022

Great channel strip

I use it a lot in the unison slot. It is great on vocals and D.I. Bass. Just plain smooth.

J. Bermudez

September 18, 2022

A must have

Brings vocals to life

K. Gwanae

September 13, 2022


Man really captures my vocals exactly how I want them to sound in my head.

UAD User

September 8, 2022

Of Course

I dreamed of having one of the hardware versions after recording an EP through one at the studio we used. Now I have it! It's just like the real thing to my ears!!!

T. Long

September 2, 2022

Very Nice.

Sounds great! Especially the punch kick algorithm. Use that on everything now. Nice one UA.
Think I got it in the Ultimate 10 Bundle which is the sickest bundle ever. It’s a monstrous collection of some really great sounding plugs. So worth the investment!
Don’t take my word for it. Download the demos and hear for yourself.

M. O'Brien

August 17, 2022

Love it!

I didn’t go for this initially because people were saying it is for rap and the spoken word. I was struggling to get bass and resonance into my vocal. Granted I am not a sweet singer. I am more about character vocals. This is simply fantastic.

A. West

August 15, 2022


UA nailed this one! True Avalon characteristics!


August 13, 2022

Just like the original!

The Avalon plug in works just like the original and the controls and face are really intuitive!

B. Wise

July 29, 2022

My new vocal 'go-to'

I have a selection of different mic pre-amp and compressor combos that I have been using in varying degrees. Most recently I had mainly been using the Manley Voxbox... That is until I decided to download and try this VT-737.

The preamp is SO sweet and smooth but with a really open and airy top end. The compressor is fairly transparent and very adaptable, mostly alleviating the need to daisy-chain other compressors into the signal chain. On vocals (which will probably be its only use for me) it sounds absolutely gorgeous and as a 'one-stop shop' Unison insert with sweet mic pre, flexible comp and a really nice EQ section this has just become my absolute 'go-to' in the Unison pre slot and most likely will be for the foreseeable future!

H. Barakovic

July 26, 2022


It's a plugin that every sound engineer nust have. Love him.

A. Siddiqui

July 22, 2022

The 737 Take off - Keep flying high

If channel strips had 7 wonders, the the Avalon VT-737 Tube Channel Strip would be for sure Number 1, this is just not a channel strip , its much more , with any microphone you can play around and get immaculate sound and top quality output . a must have for voice over artiste and surely for all types of singer awaiting stardom . To be honest, Universal Audio did some serious hardwork to make Avalon VT-737 Tube Channel Strip exactly the same like the hardware , probably better ,cause you don't need to worry about the machine rusting or having some electrical issues or maybe getting stolen in these times of inflation, hats off to UA and a Grand thank you for making it available to us. God Bless

A. Manresa

July 21, 2022

Spectacular mic preamp for voice overs and voice actors

In many of the recording studios that I have had the opportunity to go to work, there was the Avalon VT-737.
He has the incredible ability to give my voice a body and a grandeur that few can achieve. Absolute clarity, superb dynamics; and extraordinary strength.

I am very surprised at all that is giving good for me. Since I personally use it in my recording studio, I don't usually use the one I had before. Since the Avalon Vt-737 is far superior.
I recommend it above all to those who are dedicated to voice recordings for commercials, dubbing, narrations, etc. Spectacular!