10 Best Acoustic Amps 2025 in the United States

The Positive Grid Spark 2 is a versatile 50W guitar practice amp that caters to electric, acoustic, and bass guitars. It boasts powerful sound quality thanks to Sonic IQ Computational Audio and premium angled FRFR speakers. The built-in Creative Groove Looper with hundreds of drum patterns adds a lot of value for practicing musicians, allowing them to play along with different beats.

AI features are impressive, enabling users to describe their desired tone and get automatic suggestions, which is great for those looking to experiment with sound without extensive manual adjustments. Moreover, the amp models powered by upgraded DSP and new tube emulation ensure rich, authentic sound quality. For those seeking portability, it can play up to 12 hours with optional battery power (battery sold separately), making it suitable for practices on the go.

Though the amp is a bit heavy at 12.1 pounds, its robust metal build promises durability. However, the amp might be overkill for beginners due to its advanced features and higher price point. It is more suitable for intermediate to advanced players who will appreciate the range of functionalities. This makes it an excellent choice for those seeking a high-quality, feature-rich acoustic amp for practice and performance.

The Positive Grid Spark GO is a very compact and portable guitar amp with a 5-watt output, making it ideal for practice, travel, or casual jamming rather than loud performances. Its small size (about 5 x 3 x 2 inches) and lightweight design make it extremely easy to carry around. Despite its size, it impresses with a wide selection of 33 amp models and 43 effects, plus access to thousands of user-created tones via an online community, giving a lot of creative flexibility. The included smart features like real-time chord detection and an AI jam partner enhance practice and make playing more engaging, especially for beginners or those looking to have fun with their guitar. The rechargeable battery lasts up to 8 hours, which is convenient for long sessions without needing power.

Because of its tiny speaker and relatively low wattage, it won't deliver the volume or full sound depth needed for larger rooms or performances with a band. It primarily has a single channel setup, so it’s less suited for complex stereo effects. Build quality feels solid but is focused on portability rather than ruggedness for heavy gigging. This amp suits guitarists who want a highly portable, feature-packed practice amp with smart tools, rather than those needing high power or pro-level sound for live shows.

The Fender Champion II 25 Guitar Amp is a solid choice for guitar enthusiasts looking for a reliable and versatile amplifier. With a power output of 25 watts, it is well-suited for small venues, practice sessions, or home use. The 8-inch Fender Special Design speaker delivers clear sound quality, making it enjoyable to play through. One of the standout features of this amp is its array of built-in effects, including reverb, delay, chorus, and tremolo, allowing users to explore various sounds and styles without needing additional pedals. The single channel setup simplifies the user experience, making it approachable for beginners while still providing enough depth for more experienced players to appreciate the different amp voicings and distortion options.

On the downside, the 25-watt power output may not be sufficient for larger gigs, so players aiming to perform in bigger venues might need to consider a more powerful option. Additionally, being built from particle board, the amp's construction may not withstand rough handling compared to more robust materials. Portability is adequate, weighing in at 12 pounds, but those looking for something extremely lightweight might find it a bit heavier than expected.

This amp caters particularly well to beginner to intermediate players due to its user-friendly features and range of effects, while also appealing to those who enjoy experimenting with sound. Whether you're practicing at home or jamming with friends, the Fender Champion II offers a great blend of performance and versatility.