AudioFuAudioFu Chart · October 2026
Best Focusrite Preamps 2026
The top pick is Focusrite ISA Two 2-Channel Mic Preamp ($939). Focusrite ISA One Analog gives you the most for the money at $603. Focusrite ISA 828 MKII leads the high end. Ranked by the AudioFu Index from 5 models, prices checked every night.
Last updated: October 14, 2026
Top 5
Full detail for the 5 highest AudioFu Index scores. Every other model is listed below.
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- Size19"
The ISA Two is a fantastic, focused preamp – it’s not a full interface, but a dedicated box of sonic goodness. That Lundahl transformer really adds a vintage vibe without sounding muddy, making it a great choice for vocalists, acoustic instruments, or anything needing a touch of warmth and character. If you're looking to elevate your tracking chain, this is a serious contender.
Pros
- Lundahl transformer imparts a gorgeous, warm, and musical character.
- Variable impedance allows tailoring preamp response to different mics.
- Clean, transparent gain up top; handles hot signals gracefully.
Cons
- Limited to two channels; not ideal for large multi-mic setups.
- Insert points are a bit fiddly for complex signal chains.
63AudioFu
Index↓ 6.7%since Aug 14 · lowest so far$1,006 · Aug 14$939 now$939€839 at Thomann · in stockCheck price ↗ -
Focusrite Clarett+ OctoPre 8-Channel Microphone Preamp with ADAT I/
O Clarett+ OctoPre · Focusrite
12 for sale on Reverb1 finish at Thomann
- Size19"
- Weight4.15 kg
The Clarett+ OctoPre delivers genuinely impressive preamp performance for the price, especially with that 'Air' flavor mimicking the ISA 110. It's a fantastic workhorse for smaller studios and serious home recordists needing pristine, reliable tracking – just be mindful of its size. This is a solid choice for bands and producers prioritizing clean, detailed recordings.
Pros
- Excellent preamp clarity with the 'Air' circuit emulation
- Robust build quality; feels solid and reliable in a rack
- Flexible I/O options handle diverse recording scenarios
Cons
- Limited routing flexibility compared to more expensive consoles
- Size and weight make it less ideal for mobile recording setups
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- Size19"
The ISA 828 MKII is a seriously clean and musical preamp – that Lundahl transformer magic really shines. It’s perfect for engineers and studios wanting that authentic, slightly colored vintage console sound without the expense of a real console. If you're tracking drums, vocals, or anything needing a touch of warmth and clarity, this is a top-tier choice.
Pros
- Lundahl transformers impart a warm, musical character to the signal.
- The ISA 110 impedance setting nails that classic vintage console vibe.
- DI inputs are excellent quality, usable for tracking acoustic or electric instruments.
Cons
- The Sub-D25 connections feel dated and a bit clunky for modern workflows.
- Rack format requires dedicated space, less ideal for smaller setups.
49AudioFu
Index↓ 11.7%since Aug 14 · lowest so far$3,802 · Aug 14$3,355 now$3,355€2,999 at Thomann · in stockCheck price ↗ -
- Size19"
The ISA 428 MKII is a serious preamp for engineers and musicians chasing that classic, analog warmth. Its transformer design adds a lovely harmonic richness to vocals, acoustic instruments, and even electric guitars. This is a workhorse for anyone needing high-quality, reliable preamps for tracking and mixing.
Pros
- Transformer-based circuitry imparts a warm, characterful sonic signature.
- Variable input impedance allows tailoring preamp response to diverse sources.
- Robust, rack-mountable build quality inspires confidence and longevity.
Cons
- Premium-priced, a significant investment for smaller studios.
- Limited channel count might not suit large-scale recording projects.
47AudioFu
Index↓ 7.4%since Aug 14$2,415 · Aug 14$2,236 now$2,236€1,999 at Thomann · in stockCheck price ↗ -
- Weight3.9 kg
The Focusrite ISA One Analog brings a touch of classic studio magic to your home setup. It's a fantastic choice for vocalists, acoustic instrument players, or anyone craving that signature Focusrite preamp tone. While not a full interface, its clean gain and build quality make it a worthwhile addition for serious recording.
Pros
- ISA preamps deliver that classic, warm British sound signature.
- Discrete Class A circuitry provides clean gain and low noise floor.
- Switchable impedance allows tailoring character for ribbon or dynamic mics.
Cons
- Single-channel design limits versatility for multi-mic'd sources.
- Relatively heavy for a single-channel preamp; not ideal for mobile setups.
Preamps by the numbers
Measured across all 362 models we track, not a sample.
median of 133 models · 0.16 kg–7 kg
median of 90 models · 9.5"–19"
How to choose the best preamps
ISA Preamp Heritage
The original ISA preamps, used in the legendary Forte and Red consoles, are the foundation for a lot of Focusrite's character. They're known for a smooth, musical tone-not sterile, but adding a pleasing warmth and a subtle compression that makes things sit well in a mix. That 'ISA vibe' is what a lot of players chase.
Clean Gain and Headroom
Focusrite generally excels in providing plenty of clean gain before breakup. This is crucial for recording dynamic sources like drums or vocals where you need to capture the full range without adding unwanted noise. Lower-end models might start to color the signal earlier, but the higher-tier ones really deliver on headroom.
Dynamic Response
It's not just about loudness; it's how the preamp reacts to quieter and louder signals. Good Focusrite preamps handle transients well, preserving the attack of a snare drum or the pluck of a bass string while still adding a touch of warmth. Cheaper models can sometimes sound a bit flat and lifeless in comparison.
Noise Floor
This is a big one. A low noise floor means less hiss and hum in your recordings, especially when using sensitive microphones. While modern Focusrites are generally good, budget models can be a bit noisier-something to consider if you're tracking quiet instruments or vocals.
EQ and Features
Some Focusrite preamps offer built-in EQ or other features like pad switches. These can be handy for quick adjustments during tracking, but be wary - the EQ isn't always the most transparent and can sometimes muddy up the signal if overused. It's often better to rely on a dedicated EQ plugin later on.
Buying guide
Alright, let's talk Focusrite preamps. For years, they've been the go-to for a lot of us starting out, and even now, pros still rely on 'em. That classic Scarlett sound, that little bit of warmth, it's been a bedrock of countless recordings. But with so many models now, figuring out which Focusrite preamp is actually right for your needs can be a headache - so let's break it down.
Don't get caught up in the marketing hype. The Scarlett series is fantastic for beginners and bedroom studios, but if you're serious about tracking, consider stepping up to something with ISA preamps like the Clarett+ or the RedNet series. Be aware that the cheaper models will often cut corners on component quality, which can manifest as a higher noise floor or less dynamic headroom.
Ultimately, listen to demos, compare them to other preamps, and choose what sounds best for your application.
How the AudioFu Index works
Five measured signals and nothing else — no stars from strangers, no “tested by experts” we didn’t do. The weights are fixed and public. We don’t play these instruments; we measure the market around them.
This chart covers 5 preamps from the Thomann catalogue (of 362 in the category). Before you buy, read hands-on reviews and, where you can, play it. Full methodology.
AudioFu earns a commission when you buy through our Thomann links. It never changes the order — the index does.
- Demand40%
How many of this exact model are for sale on Reverb right now — what musicians actually buy and resell.
- Lineup20%
How many finishes Thomann stocks — makers expand the models that sell.
- Price15%
Where the price has moved since we started tracking in August.
- Specs15%
How completely the maker documents it.
- Maker10%
How deep the brand’s range is in this category.
Questions
Are Scarlett preamps any good for vocals?
They can be, especially for singer-songwriters or home recording. Just be mindful of the noise floor, especially if you're using a really sensitive mic. A good dynamic mic and careful gain staging can go a long way.
What's the difference between the Scarlett and Clarett preamps?
Clarett preamps generally have better components, more headroom, and a more transparent sound. They also include Air circuitry, which adds a subtle high-frequency boost - useful for adding a bit of sparkle to vocals or acoustic instruments.
Do Focusrite preamps need phantom power?
Almost certainly, yes. Most condenser microphones require phantom power (+48V), and Focusrite preamps provide this. Dynamic mics usually don't need it, but double-check your mic's specs.
Can I use Focusrite preamps with a ribbon microphone?
Yes, but be careful. Some ribbon mics are fragile and can be damaged by phantom power. Make sure your ribbon mic is phantom power safe, or use a dedicated battery-powered preamp.
Are RedNet preamps worth the money?
If you're building a professional studio and need pristine, low-noise preamps with extensive routing options, then absolutely. They're a serious investment, but the performance is top-tier.
