ROSE RA180

HiFi ROSE RA180 – High-End Integrated Amplifier with GaN Technology

HiFi ROSE RA180 is a high-end integrated amplifier designed to combine high power output, precise loudspeaker control and exceptional configuration flexibility. Its innovative architecture uses four independent Class AD amplifier modules with GaN FET transistors, delivering 200 W per channel at 4 or 8 ohms.

The four-channel configuration allows the RA180 to operate in stereo, bi-amping or BTL mode, reaching up to 400 W × 2 channels in bridge configuration. The extensive feature set also includes an integrated MM/MC phono stage with adjustable equalisation, balanced XLR input, three RCA line inputs, subwoofer output, tone controls and a dedicated high-frequency crossover.

Class AD Amplification with GaN FET

The technological heart of the RA180 is its innovative Class AD amplification architecture based on GaN FET transistors. Gallium Nitride devices enable extremely fast switching, helping to combine the efficiency of switching amplification with highly precise signal control.

The result is an amplifier capable of delivering 200 W per channel at 4 and 8 ohms, with a damping factor greater than 150 and an exceptionally low output impedance of approximately 53 mΩ.

Four Independent Amplifier Modules

The RA180 features four independent amplifier modules, allowing it to be configured in several different ways:

• Stereo A/B: four 200 W channels for systems using two pairs of loudspeaker connections.
• Stereo + BTL: two channels used in stereo and two in bridge configuration.
• BTL A/B: two pairs of channels configured in bridge mode.
• Bi-amping: separate amplifier modules can be used to drive the high- and low-frequency sections of compatible loudspeakers.

In BTL mode, the amplifier can deliver up to 400 W × 2 channels at 8 ohms.

Designed for High-Frequency and Super Tweeter Applications

The RA180's wide-band architecture allows one of its amplifier sections to be used for the high-frequency section of compatible loudspeakers.

The dedicated High Frequency crossover provides an adjustable crossover range from 600 Hz to 6 kHz, allowing the amplifier to be adapted to different loudspeaker configurations.

The declared frequency response extends from 10 Hz to 90 kHz, providing exceptionally wide bandwidth.

MM/MC Phono Stage with Adjustable EQ

One of the RA180's most distinctive features is its integrated MM/MC phono stage.

The phono section allows separate adjustment of the Turnover and Roll-Off parameters, making it possible to accommodate different historical record equalisation curves.

Turnover provides five settings, while Roll-Off offers six configurations, including the RIAA curve.

Analogue Tone Controls

The front panel features dedicated analogue controls for Bass and Treble, both adjustable over a range of ±15 dB.

• Bass: 100 Hz, ±15 dB.
• Treble: 10 kHz, ±15 dB.

The tone-control circuitry can also be bypassed to maintain the most direct signal path possible.

Home Theatre Bypass

One of the line inputs can be configured as a Home Theatre Bypass, allowing the RA180 to be integrated into a home cinema system while keeping stereo volume management separate from the AV processor.

Balanced XLR Input

For high-end sources, the RA180 provides a balanced stereo XLR input, complemented by three stereo RCA line inputs.

The input impedance is 44 kΩ for the balanced input and 47 kΩ for the unbalanced line and phono inputs.

Subwoofer Output

The RA180 includes a fixed-level RCA subwoofer output, making it easy to add an active subwoofer and extend the system's low-frequency response.

Retro-Inspired Design and Modern Technology

The RA180 combines modern amplifier technology with an aesthetic inspired by classic analogue amplifiers. The front panel features large mechanical controls, dedicated adjustment knobs and two illuminated analogue VU meters.

The chassis combines high-purity aluminium and rust-resistant steel. With dimensions of 430 × 391 × 124 mm, the amplifier has a substantial yet classic Hi-Fi footprint.

High-Power Supply

The RA180 uses an 800 W SMPS power supply, designed to provide stable and abundant power to its four amplifier modules.

The maximum system power reaches 1100 W, while standby consumption is below 0.5 W.

Connectivity

• 1 × balanced stereo XLR input.
• 3 × stereo RCA line inputs.
• 1 × MM/MC phono input.
• 1 × RCA subwoofer output.
• Speaker outputs A/B.
• BTL configuration.
• Bi-amping operation.
• Home Theatre Bypass.
• Trigger input.
• IR input for remote control.

Key Features

• High-end integrated amplifier.
• Class AD amplification with GaN FET transistors.
• Four independent amplifier modules.
• 200 W × 4 channels at 4 ohms.
• 200 W × 4 channels at 8 ohms.
• 400 W × 2 channels in BTL mode.
• Stereo, bi-amping and BTL configurations.
• 10 Hz – 90 kHz frequency response.
• Damping factor >150.
• 53 mΩ output impedance.
• Integrated MM/MC phono stage.
• Adjustable Turnover phono equalisation.
• Adjustable Roll-Off phono equalisation.
• Five Turnover settings.
• Six Roll-Off settings.
• ±15 dB Bass and Treble controls.
• 600 Hz – 6 kHz High Frequency crossover.
• Balanced XLR input.
• Three RCA line inputs.
• Home Theatre Bypass.
• RCA subwoofer output.
• Two analogue VU meters.
• 800 W SMPS power supply.
• 1100 W maximum system power.
• 3.3 – 12 V Trigger input.
• IR remote control included.
• High-purity aluminium chassis.
• Silver finish.

Why Choose the HiFi ROSE RA180

HiFi ROSE RA180 is an exceptionally versatile integrated amplifier for listeners looking to combine modern GaN amplification technology with the functionality and tactile experience of a sophisticated analogue amplifier.

Its four independent amplifier modules allow stereo, bi-amping and BTL operation, while the integrated MM/MC phono stage with adjustable equalisation makes the RA180 equally attractive to vinyl enthusiasts.

The balanced XLR input, three RCA inputs, subwoofer output, high-frequency crossover and Home Theatre Bypass provide an unusually comprehensive range of connection and configuration options.

The result is an amplifier combining GaN amplification technology, high power output, exceptionally wide bandwidth, precise loudspeaker control and extensive analogue functionality in a distinctive and beautifully engineered chassis.

Technical Specifications