Ken Micallef of Stereophile first saw Cyrus in London hifi shops in the 1990s and thought its little boxes looked like they belonged in the dash of an Aston Martin DB5. That small box is the first Cyrus idea. Since the One amplifier of 1984, nearly everything Cyrus makes except its speakers has come in a half-width case cast as a single piece of metal, which Jim Hannon of The Absolute Sound says shields the circuits and cuts down the effects of vibration. The second idea is the add-on power supply. Plug one in and it takes over feeding the power amp, which leaves the amp's own supply to feed only the preamp section. Simon Lucas of Hi-Fi+ expects "a lean, detailed sound" from the brand and hears the i9-XR stop bass notes with no overhang. He calls it "the audio equivalent of a well-trained greyhound." Cyrus suits listeners who want speed and detail from a small stack of boxes.

Start with the i9-XR integrated. James Michael Hughes of StereoNET found it had plenty of clean power with his efficient speakers. The step up is the 40 Series, led by the 40 AMP, which takes the matching 40 PSU through a single cable, and the 80 AMP adds streaming. Match speakers with care. Chris Baillie of Hifi Pig advises pairing the Classic Amp with "speakers that are not too bright and forward themselves," and if you add an external DAC, keep its output to 2.5 volts, the most the line stage accepts. Give a new amplifier time to settle. Cyrus suggests about three days and nights of music to run one in. You can also add a power supply later. Gene Hopstetter of Secrets of Home Theater and High Fidelity heard a deeper and wider soundstage when a PSX-R2 was added to the TTP turntable, and Lee, owner of the dealer Yorkshire AV, notes that a PSU-XR lifts the Power XR from 110 to 121 watts per channel.

Cyrus began in late 1984 as the electronics line of the loudspeaker maker Mission, with two half-width amplifiers called the Mission Cyrus One and Mission Cyrus Two. Chris Baillie of Hifi Pig still remembers spending "an enchanted hour or two" with a Cyrus One in his local hifi shop when he was fifteen. Cyrus has kept its design team in Huntingdon, Cambridgeshire, since 1984, its products are still built in Britain, and it services products up to 40 years old. CD playback has become a specialty. Cyrus's Servo Evolution platform aims to read each disc correctly the first time instead of relying on error correction, and R&D head Ceri Williamson told Stereophile that off-the-shelf mechanisms are built for car and portable players, where "it's more important that your disc doesn't skip" than to hear the recording's noise floor. In 2024 Cyrus marked 40 years with its first turntable, the TTP, and Hopstetter heard "a solidity of image and body I usually associate with idler-wheel turntables" such as the Garrard 301.