HiFi Rose RA180
Bold amplifier design and impeccable performance
Just one look at HiFi Rose's RA180 shows you it's an out-of-the-ordinary integrated amplifier. Closer inspection reveals its relatively old-school approach, though. It's not a streamer or a DAC — its only Wi-Fi feature is connection to its user-friendly control app.
It's got four bridgeable channels of impeccable power for your speakers and balanced and unbalanced analog inputs, including a phono input. And it's got powerful features that let you tailor your sound with precision.
Beautiful form and function
The RA180's look is a little bit "steampunk," and 100% audiophile. Its illuminated analog level meters have partially open faces beneath the crystal that let you see the electromagnets that control the needle. The distinctive volume knob turns five aluminum gears when you adjust the level.
You can make virtually any adjustment using the tactile front-panel controls — switch between sources, adjust bass, treble, and balance, and plenty more. When you control the amp with the included remote or the Rose AMP Connect app for Apple® and Android™ devices, the physical dials on the amp actually move. That just looks and feels cool.
And you can bypass front-panel controls in discrete sections using the dedicated switches, or all at once using the pure direct switch.
Flexible analog connections
This amp has unbalanced and balanced analog inputs, including a home-theater bypass and a highly tweakable phono input. You can use either a moving coil or moving magnet cartridge and dial it with the front-panel phono preamp controls in to get the best sound.
The RA180's connections are all analog, but you can get amazing sound from digital sources that have a built-in DAC — like its perfect match, the HiFi Rose RS150B network streamer.
Advanced hybrid amplification
The RA180 features four separate amplifier channels, all using an innovative circuit design that HiFi Rose calls "Class AD." Like more typical Class D amps, it uses a "switching" design. But the RA180's GaN (Gallium nitride) FET topology sweetens the sometimes clinical sound of Class D amplification by speeding up the timing between switches — up to 10 times faster than typical silicon FET switching devices.
The super-versatile RA180's back panel features balanced and unbalanced inputs and bi-amp outputs for A and B speaker pairs.
Versatile bi-amp outputs for two pairs of speakers
You'll notice that the RA180 has eight pairs of speaker terminals on its back panel. Its unique configuration lets you bi-amp compatible speakers, powering the tweeters and low-frequency drivers with dedicated built-in amp channels. You can even experiment with the front-panel crossover controls if you're bypassing your speakers' internal crossovers.
You can hook up two pairs of speakers and select between them using the front-panel control. Or you can throw the back-panel switch to run the amp in stereo bridged (BTL) mode and get 400 watts per channel into a single pair of speakers.
- integrated four-channel amplifier with bi-amp speaker outputs
- Class AD amplification uses super-efficient GaN (Gallium nitrate) FET output switching for smooth, accurate sound
- 200 watts x 4 into 8 ohms (20-20,000 into 8 ohms at 0.005% THD)
- 200 watts x 4 into 4 ohms
- 400 watts x 2 in bridged (BTL) mode
- frequency response: 20-50,000 Hz (or 20-100,000 Hz @ -3dB)
- signal-to-noise ratios:
- 108dB (balanced)
- 106dB (unbalanced)
- 79dB (MM phono)
- geared rotary volume display window
- source input selector
- treble, bass, and balance controls
- phono preamp with low-mid bass turnover and high-frequency roll off controls
- active crossover with frequency and gain controls
- pure direct switch bypasses all preamp controls
- speaker output selector
- subsonic filter switch for cutting out turntable rumble
- attenuator switch for greater control at low volume
- illuminated analog level meters
- 3-level dimmer for front-panel illumination
- balanced stereo XLR input
- four unbalanced stereo RCA inputs, including phono input with ground and MC/MM switch
- home theater bypass on input 3
- mono RCA output for connecting a powered subwoofer
- speaker outputs for two pairs of speakers (A and B)
- two pairs of binding posts for each allow bi-amping
- 3.5mm 12V trigger input and IR input
- service (SVC) only port
- detachable AC power cord
- rear-panel internal circuit breaker reset button
- 16-15/16"W x 5-1/8"H x 17-7/16"D
- weight 36.8 lbs.
- warranty: 1 year
- MFR # RA180 SLV