Any Outboard Gear Favourites? 10 Classics Engineers Keep Coming Back To
Updated: Sep 25
The outboard gear favourites engineers keep coming back to are a short list of classics: the UREI 1176 and Teletronix LA-2A compressors, the Fairchild 660 and 670, the Pultec EQP-1A, the Neve 1073 preamp, the dbx 160, the SSL bus compressor, the Empirical Labs Distressor, the Danish Tube-Tech CL 1B and the Roland RE-201 Space Echo. This guide covers what each one is, when it appeared, what it does to a sound and where it earns its place in a mix, plus our honest view on whether a home studio needs any outboard at all.
Outboard gear means the processors that live outside the mixing console or the computer: compressors, equalisers, preamps and effects in a rack. They were the only way to shape sound before plugins, and most plugins today are copies of them. Knowing the originals makes you better at using both.
Outboard gear favourites at a glance
UREI 1176 (1967): FET peak limiter. Fast, aggressive, the vocal and drum compressor.
Teletronix LA-2A (1962): optical tube leveller. Slow, smooth, two knobs.
Fairchild 660 and 670 (late 1950s): variable-mu tube limiters. Abbey Road's compressor.
Pultec EQP-1A (1950s): passive tube EQ. Boost and cut the same low frequency at once.
Neve 1073 (1970): class-A preamp and EQ with transformers. "British iron".
dbx 160 (1976): the first successful VCA compressor. Punchy on drums and bass.
SSL bus compressor (1980s): the "glue" on the stereo bus of countless records.
Empirical Labs Distressor (mid-1990s): modern digitally controlled analog compressor that can imitate most of the others.
Tube-Tech CL 1B (1991): Danish optical tube compressor, a vocal favourite.
Roland RE-201 Space Echo (1974): tape echo and spring reverb in one box.
The 10 outboard classics, one by one
1. UREI 1176 (1967)
Bill Putnam designed the 1176 at Universal Audio in 1967, and it was the first peak limiter to use a field effect transistor (FET) instead of a tube. Its attack can be faster than a millisecond, and it has four ratio buttons. Push all four in at once and you get "all-buttons" or "British mode", a wild, distorted compression beloved on drum room mics and screamed vocals. The 1176 went through many revisions, which the 1176 history on Wikipedia lists.
Where it fits: vocals that need to sit in front of loud guitars, snare and room mics, bass that has to stay even. We wrote a whole post on it: the 1176 limiting amplifier, the sound of energy and attack.
2. Teletronix LA-2A (1962)
Jim Lawrence's Teletronix introduced the LA-2A in 1962. It uses a T4 optical cell (a light and a light-sensitive resistor) to control gain, and it has just two main knobs, peak reduction and gain. The optical cell reacts slowly and releases in two stages, so it evens out a performance without grabbing at every peak.
Where it fits: vocals and bass, where you want level control that sounds like nothing is happening. The classic chain is an 1176 catching peaks followed by an LA-2A smoothing the rest. More on the plugin version in the LA-2A plugin.
3. Fairchild 660 and 670 (late 1950s)
Rein Narma designed the Fairchild limiters, and the stereo 670 arrived around 1959 to 1960. They are variable-mu tube compressors built around a large number of tubes and transformers, which is why a 670 weighs around 30 kg and originals cost more than a car on the vintage market. Abbey Road used Fairchilds throughout the 1960s.
The sound is thick and slow, with compression that feels like the music is being gently held rather than squeezed. Originals are extremely rare, so almost everyone meets the Fairchild as a plugin or a modern recreation.
4. Pultec EQP-1A (1950s)
Pulse Techniques in New Jersey introduced the EQP-1 in 1951, a passive program equaliser based on Western Electric filter designs, and the EQP-1A with its tube make-up stage followed. Its famous trick: you can boost and cut the same low frequency at the same time. The boost and cut curves overlap in a way that adds weight while tightening the mud just above it. Mix covers the Pultec's history.
Where it fits: kick drum, bass, and the whole mix, where a gentle Pultec lift at the bottom and the top makes a record sound more expensive. Read more in Pultec EQP-1A, the holy grail of analog EQ.
5. Neve 1073 (1970)
The 1073 was born as a channel module on the Neve A88 console built for Wessex Studios in 1970. It combines a class-A preamp with Marinair transformers and a three-band EQ, and it became the most copied preamp in recording history. As rack units, 1073s are the preamp many engineers reach for first.
Where it fits: everything that needs weight on the way in, especially vocals, bass and electric guitar. Push the input and the transformers add thickness and soften transients. We cover its console roots in vintage mixing consoles that shaped recording studios and the wider family in vintage studio preamplifiers.
6. dbx 160 (1976)
The dbx 160 from 1976 was the first commercially successful compressor to use a voltage-controlled amplifier (VCA). It is simple, with threshold, ratio and output controls, and very hard to make sound bad. Mix's history of the dbx 160 tells the story.
Where it fits: kick, snare, bass and anything that needs to hit hard. A dbx 160 on a bass guitar is one of the quickest ways to make the low end feel solid in a band mix.
7. SSL bus compressor (1980s)
The stereo bus compressor built into Solid State Logic's large-format consoles, most famously the G-Series, became a sound on its own: a VCA compressor that makes a mix feel glued and louder without obvious squashing. It has since been sold as a rack unit, and API's 2500 (2002) is the other bus compressor engineers often compare it to.
Where it fits: the mix bus, with a slow attack, auto release and a couple of decibels of gain reduction. It is one of the few pieces of outboard that almost every mixer has an opinion about.
8. Empirical Labs Distressor (mid-1990s)
Dave Derr designed the Distressor in the mid-1990s, and it went on sale around 1995 to 1996. It is an analog compressor with digital control that can behave like several classic units, from gentle opto-style levelling to the brutal "Nuke" setting, and it can add tube- or tape-style harmonic distortion.
Where it fits: anywhere, which is the point. Drum rooms on Nuke, vocals, bass, acoustic guitar. Many studios own two, because it is the compressor that can stand in for most of the others on this list.
9. Tube-Tech CL 1B (1991)
The CL 1B is a Danish classic, an all-tube optical compressor built by Lydkraft in Rødovre, just outside Copenhagen, and introduced in 1991. Unlike an LA-2A it has full attack, release, ratio and threshold controls, which makes it a smooth opto compressor you can actually steer.
Where it fits: lead vocals, where it is famous for pulling a performance forward without sounding compressed, and bass. It is also proof that some of the gear engineers love most was not built in London or Los Angeles.
10. Roland RE-201 Space Echo (1974)
Roland introduced the RE-201 Space Echo in 1974: a tape loop with several playback heads for echo, plus a spring reverb, in one box. The tape wobbles, the heads saturate and the repeats darken as they feed back, which is exactly why people still buy old ones and maintain them. Roland's own Space Echo story covers its history.
Where it fits: dub-style vocal throws, guitar ambience and anything that should feel like it is coming from a tape. For more tape echo, see rare tape echo units for studio recordings and the Maestro Echoplex EP-3.
Why outboard gear still matters
A plugin can model a circuit very well. What it changes less is how you work. Outboard gear has a cost in time and patching, so you use it on purpose and often print it while recording. That makes decisions happen early, and records made from early decisions tend to sound more like someone meant them. Analog circuits also behave differently when you push them: transformers and tubes saturate gradually, which is part of why a mix run through hardware can feel thicker and more forgiving. Our longer view is in why analog hardware still matters and the summing bottleneck.
Do you need outboard gear in a home studio?
Our honest opinion: usually not, at least not before you have a good room, a good performance and one good preamp. The plugin versions of every unit on this list are good enough to make great records, and most of the difference between an amateur and a pro mix is decisions, not hardware. We wrote about that in the plugin isn't the problem, you are.
If you do buy one piece of outboard, make it something on the way in: a good preamp or a compressor you track through. It forces you to commit, and commitment is what the old records had. We mix in a hybrid analog and digital setup for the same reason, and we explain how in the hybrid workflow.
How to use outboard gear well
Print it while tracking when you are sure, especially compression and preamp colour. It saves hours later.
Gain stage for the hardware. Analog gear has a sweet spot. Too quiet and it adds nothing, too hot and it distorts in a way you may not want.
Use less than you think. Two or three decibels of gain reduction from a good compressor is often the whole job.
Match levels when comparing. Louder always sounds better. Compare hardware in and out at the same level before deciding it helped.
Document your settings. Photos of the front panel are the recall system most studios actually use.
Outboard gear FAQ
What is outboard gear?
Outboard gear is audio processing equipment that sits outside the mixing console or computer, such as hardware compressors, equalisers, preamps and effects units mounted in a rack.
What is the most popular outboard compressor?
The UREI 1176 and the Teletronix LA-2A are the two most famous, and many engineers use them together on vocals: the 1176 for fast peaks, the LA-2A for smooth levelling.
Is outboard gear better than plugins?
Not automatically. Good plugins model most classic units closely. Outboard gear adds analog saturation and pushes you to commit to decisions early, which often helps a record, but a good plugin mix beats a bad hardware mix.
What outboard gear should I buy first?
A good preamp or a versatile compressor you can record through, such as a 1073-style preamp or a Distressor-type compressor. Treat your room and learn your monitors before buying more.
What is the Pultec trick?
On a Pultec EQP-1A you can boost and cut the same low frequency at once. The overlapping curves add low-end weight while tightening the muddy area just above it, which is why it is so popular on kick, bass and the mix bus.
Keep reading
Want your record to go through real analog hardware without losing what makes it yours? We mix indie rock, post-punk and shoegaze in a hybrid analog setup for artists everywhere. Send us the rough mix.
