A Respected British Hi-Fi Maker Just Upgraded Its Fan-Favorite Amplifiers

According to the brand, the new amps “raise the bar even higher.”

Close-up of a black audio device with a large circular knob outlined by a thin yellow ring, labeled "input." The device has a matte finish with a small screw visible near the bottom left corner.

Published 2 hours ago

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Arcam introduced its Radia series of integrated stereo amplifiers just two years ago, but they’ve been a big hit among audiophiles looking to build a more traditional hi-fi setup in a relatively affordable way.

And now the venerable British hi-fi maker has released next-generation versions of those same amplifiers that, according to the brand, “raise the bar even higher.”

Arcam Radia+ Series (2025)

Black Arcam A5+ stereo amplifier with a minimalist design, featuring two large circular knobs on the front panel labeled "input" on the left and "volume" on the right, with a digital display in the center showing "ARCAM A5+". The amplifier is set against a dark background with a subtle yellow gradient and is reflected on the glossy surface below. — According to Arcam, the A5+ is “the perfect introduction to premium hi-fi.”

The three amplifiers

Like before, there are three amplifiers in the new Radia+ series: A5+, A15+ and A25+. The new models share the same name as their predecessor, but have the added “+” designation.

Each model is an integrated stereo amplifier featuring a built-in phono preamplifier for easy turntable connectivity, as well as built-in Bluetooth, allowing you to stream music to the system when not playing from a traditional source.

The three models differ in size and power. The A5+ is the most entry-level, capable of delivering 50 watts to each channel. The A15+ is the next step up, delivering 80 watts per channel. And the flagship A25+ delivers 100 watts per channel.

The A15+ adds “more muscle for larger rooms and tower speakers.”

Arcam

Upgraded internals

Most of the upgrades with the Radia+ amplifiers are internal. According to the brand, each builds on the DNA of the outgoing A5, A15, and A25, but features “upgraded circuitry, refined components and intelligent power management.”

Additionally, each features upgraded Bluetooth streaming capabilities, with support for AptX Lossless (which promises “bit-perfect CD-quality” streaming), LE Audio and Auracast.

Black Arcam A25+ audio amplifier with a digital display in the center showing "ARCAM A25+", two large control knobs on either side labeled "input" and "volume," and subtle yellow lighting accents around the knobs, reflected on a glossy black surface with a gradient yellow background. — The flagship A25+ has an OLED display shielded by a glass panel.

TV connectivity

The biggest upgrades come to the two larger models. Specifically, Arcam added TV connectivity to both the A15+ and A25+ via an HDMI eARC input.

The flagship A25+ also has a new look. Specifically, it has a new OLED display shielded by a glass panel. This design matches Arcam’s Radia ST25 streamer, in case you want to stack the two components.

Price and availability

Arcam’s A5+, A15+ and A25+ cost $1,200, $1,500 and $2,000, respectively.

All three Radia+ series amplifiers will be available in Q4 of this year.

Arcam

About the Author:

Tucker Bowe has been on Gear Patrol’s editorial team since 2014. As a Tech Staff Writer, he tracks everything in the consumer tech space, from headphones to smartphones, wearables to home theater systems. If it lights up or makes noise, he probably covers it.