Guitar Audio Interface roundup
Guitar Audio Interface: A Complete Buyer's Guide
Choosing the right interface means matching input count, preamp quality and budget to how you actually record. This guide covers every decision point with specific model recommendations.
Choosing a guitar audio interface comes down to a handful of practical decisions: input count, preamp quality, budget and whether you need any additional features like onboard DSP or built-in effects. This guide covers each of those in order of importance.
Start With Input Count
A guitarist recording at home typically needs one instrument input and optionally one microphone input for vocals or mic'd cabinet. A two-input interface is the most practical choice — it covers both without paying for inputs you will not use. If you record with other musicians simultaneously or mic both an amp cabinet and a room, look at four-input options. Single-input interfaces save money but limit flexibility if your needs change.
Preamp Quality
The preamp is where interfaces differ most meaningfully at the sub-£200 price point. The Focusrite Scarlett range uses preamps that are clean, quiet and well-regarded for home recording. The Audient iD4 MkII includes a preamp design derived from Audient's professional console work, offering noticeably lower noise and more headroom than comparably priced alternatives. The Universal Audio Volt series adds a vintage transformer character option that is genuinely useful for certain guitar tones. At the entry level — below £80 — the PreSonus AudioBox USB 96 and Behringer U-Phoria UM2 cover the basic function without the refinement of the mid-range options.
The Hi-Z Input
Every guitar audio interface should include at least one Hi-Z (high-impedance) instrument input. This is the jack socket you plug your guitar directly into — not a microphone XLR input. The Hi-Z circuit matches the impedance of your guitar's output, which is essential for capturing the full tonal range of the instrument. If a low-cost interface omits a true Hi-Z input and routes guitar through a standard microphone input via a DI adapter, tonal quality suffers.
Latency and Direct Monitoring
Round-trip latency — the time between playing a note and hearing it back through the computer — is a practical concern when recording. USB interfaces on current hardware typically achieve 4–8 ms at standard buffer settings, which is acceptable for most players. Direct monitoring, a hardware mix that bypasses the computer entirely, eliminates latency entirely at the cost of not hearing any software processing in the headphones. Both USB and USB-C interfaces can achieve usable latency with appropriate buffer settings.
Software Bundled With the Interface
Most interfaces come with a version of a DAW (digital audio workstation) and often a selection of amp simulation or effects plugins. The Focusrite Scarlett range includes a bundled edition of Ableton Live Lite alongside other tools. These bundles add genuine value for players starting out who do not yet own recording software.
Recommended Picks by Budget
| Budget | Model | Inputs |
|---|---|---|
| Under £80 | Focusrite Scarlett Solo | 1 mic, 1 Hi-Z |
| £80–140 | Focusrite Scarlett 2i2 | 2 mic/Hi-Z |
| £140–200 | Audient iD4 MkII | 1 mic, 1 Hi-Z |
| £180–250 | Universal Audio Volt 176 | 1 mic, 1 Hi-Z |
Comments