Yamaha THR30IIA Wireless: Practice and Performance in One Desktop Amp

Quick Take

What it is: A 30-watt desktop acoustic combo with two 3.5-inch speakers, Yamaha's Acoustic Mic Modeling, a dedicated XLR/TRS vocal input, Bluetooth, a built-in wireless guitar receiver and a rechargeable battery.

Who it's for: Acoustic players and singer-songwriters who want one amp that handles quiet home practice, recording and small stage work without compromise in either direction.

Price: $649.99 at Sweetwater (checked 08/20/2026).

The catch: The wireless guitar transmitter isn't included — the receiver is built in, but you need a Line 6 Relay G10TII separately to actually cut the cable.

Yes — the THR30IIA Wireless gives acoustic players the same tone and functionality electric guitarists love about the THR30 series. It's a versatile acoustic amp that's as useful for home recording as it is for performing, and it's possible you've missed it entirely. The THR30 amps have long flown under the radar, and the players who have tried them tend to be the ones who won't shut up about them.

Yamaha THR30IIA Wireless

$649.99

View at Sweetwater

Power	30 watts
Speakers	2 x 3.5-inch, stereo
Tone shaping	Acoustic Mic Modeling, 3-band EQ, Stereo Imager, dual effects sections
Second input	Dedicated XLR/TRS for a vocal mic or a second acoustic-electric
Wireless	Bluetooth audio plus a built-in guitar wireless receiver
Battery	Internal rechargeable, up to 5 hours from a full charge
Outputs	Line outputs on the rear panel, plus a headphone output

The ultimate desktop amp for acoustic guitar

Like the rest of the THR30 family, the Yamaha THR30IIA Wireless comes in a desktop-friendly design with a sturdy metal handle and case that feels ruggedly reliable. It looks like a typical amplifier head, but it's actually a combo: inside are two 3.5-inch speakers that deliver a surprisingly full and balanced sound, which is exactly what you want for low-volume practice.

There's a headphone output for private sessions, and when more volume is required the THR30IIA has you covered too. The rear panel carries line outputs that connect to a mixing board or powered speaker system — exactly what you need for a live performance with a sound system.

What does Acoustic Mic Modeling actually do?

It puts a modelled studio microphone between your pickup and the speaker. Yamaha's Acoustic Mic Modeling (AMM) offers a range of realistic models of dynamic, condenser and vintage tube microphones for studio-quality sound. There's a voicing mode optimised for nylon-string guitar, and a “flat” mode that leaves your signal completely unaltered. You can also blend your dry tone in with the AMM processing to fine-tune the exact balance you want.

AMM is impressive, but the THR30IIA would offer serious tone-shaping potential without it. A 3-band EQ gives you full control over bass, mids and highs, while dual effects sections put reverb, delay and chorus within easy reach. You could integrate your own acoustic effects processors, though the THR30IIA will likely meet any of your basic effects needs short of a looper pedal.

As for the overall sound, you'll likely be impressed at how big a pair of 3.5-inch speakers can sound. The Stereo Imager feature pushes it further, conjuring an impressively wide soundstage for such a compact amp. If you're after the biggest, fullest sound possible you'll be plugging the line outputs into a larger system — but don't discount the THR30IIA's own output just because of its size.

Can you plug a vocal mic into it?

Yes — there's a dedicated XLR/TRS input for vocal microphones, and it can also accept a second acoustic-electric instrument instead. That's what makes the THR30IIA Wireless genuinely useful for singer-songwriters rather than just guitarists, and it doubles as a vocal-practice platform in its own right thanks to the wireless connectivity for singing over backing tracks.

What the wireless actually gets you

Two different things, and they're worth separating. The first is Bluetooth. Connect wirelessly to your phone or music player and jam along to your favourite songs or learning apps. Bluetooth also lets you tap into the Yamaha Mobile Editor for remote control over the amp — very convenient when you're sitting on the other side of the room. The app's Rec'n'Share feature combines the sound from your amp with tracks from your music library and uploads finished performances directly from your iOS device, which is genuinely useful rather than a gimmick.

The second is a wireless guitar receiver built into the amp, for true cable-free playing. You just need the Line 6 Relay G10TII transmitter, sold separately, and you're ready to ditch your instrument cable.

Truly portable, thanks to the battery

The THR30IIA Wireless is compact and lightweight, but we don't consider an amplifier truly portable unless it brings its own power. This one does: an internal rechargeable battery promises up to 5 hours from a full charge. Plenty of amp companies tout a rechargeable battery as a “go anywhere” feature, but here at No Fear Gear we think the best benefits are found around your home. Factor in the optional wireless transmitter and you can pick the THR30IIA Wireless up and put it wherever you feel like playing.

Practice to performance, done right

We've seen plenty of amps that claim to cover your guitar needs from practice to performance, but they're usually weighted much more in one direction than the other. The Yamaha THR30IIA Wireless strikes a balance that isn't commonly achieved. It has the practice and home-use functionality to set a beginner on the right path, it sounds fantastic, and it gives you the versatility to use it on stage without fuss. Thanks to truly portable operation, you can take it anywhere your inspiration goes.