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Kronos AV
Kronos AV
About
HiFi Rose
HiFi Rose is a HiFi Media Player brand that resembles a rose. ROSE' representative identity 'audio with screen' Users can operate the screen intuitively and conveniently. You can experience the deep impression of high-definition sound with video.

HiFi Rose RA180 Integrated Amplifier
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  • Sale
  • Regular price £5,499.00
  • Available Worldwide Shipping

 

  • Next-Generation Class AD Amplifier
  • Retro-Industrial aesthetic with high-purty aluminium construction
  • Tonally flat output with Bass and Treble adjustment controls
  • Bi-Amping or Bridge Tied Loads options via four amplifier modules

 

RA180 Integrated Amplifier

The RA180 integrated amplifier has been carefully considered, crafted and constructed to challenge contemporary expectations and deliver a near-perfect, natural sound that defies entrenched beliefs. Unique input and output options alongside user-adjustable features to suit any premium audio system ensures the use of this elegant 800W Class AD amplifier is an experience to behold.  

Sound Design

The overall design of the RA180 perfectly complements the award-winning RS150B music streamer in its overall impression. However, its semi-exposed, retro-industrial aesthetic is one that sits at home in any premium audio system. Constructed from high-purity aluminium, the chassis houses a wealth of complex engineering inside.  

A New Standard in Amplifier Design

The RA180 is based around a new concept Class AD Amplifier technology. Class D amplification provides higher efficiency and higher output, as well as improved noise and distortion measurements, compared to more traditional Class AB designs. However, many Class D designs in the past have suffered in sound quality, due to limitations in the digital circuitry. HiFi Rose’s state-of-the-art Class AD amplifier resolves these problems with the use of innovative new materials. 

 The RA180’s Class AD amplifier boasts Gallium Nitride FETs as opposed to more common Silicon FET technology. The result of this design is a high-speed, perfectly accurate amplification stage with almost no dead time, allowing it to perform far more naturally, like a pure analogue amplifier.  

Multi-Output Design

The RA180 boasts two 200W amplifier modules per-channel. One amp is optimised for stable mid-bass and balance, while the other is designed to deliver smooth, clean power to the high frequencies, spanning up into the super tweeter area well beyond 20kHz. The result is a sophisticated bi-amplification solution from a single box, where, when the two modules per-channel are connected to a speaker’s high and low-frequency inputs separately, the driving force to the speaker is clean, controlled and directed without interference. 

To help control the high frequencies, the RA180 is equipped with a user adjustable active crossover. The H/F CROSSOVER section allows users to set the base high-frequency output from 600Hz to 6,000kHz for a perfect matching of the connected speakers. The high-frequency amplifier module will then support playback up-to 100kHz (@ -3dB) to help shape a wide and deep sound stage that feels natural and without limitation.   

 Finally, the two amplifier modules per-channel can also be set to Bridge Tied Loads (BTL) mode, allowing for a single pair of speaker cables to connect to each speaker while still benefiting from 400W of rich, balanced sound.  

Customisable Experience

The RA180 boasts a host of other customisable features. The Bass and Treble tone controls allow users to adjust the flat frequency response at 100Hz and 10kHz, respectively, with ±15dB gain for a fully tailored sound. There’s also the finely adjustable balance control slider to precisely set the signal split between both channels. Alternatively, the BYPASS.POWER AMP mode links the source connected to the LINE 3 input directly to the power amplifier stage without going through the pre-amplifier. This is particularly useful for home theatre applications, allowing the RA180 to power the front speakers in a home cinema system without having to manage multiple volume dials.  

 Elsewhere the built-in MM and MC compatible phono stage – which is equipped with low-band bass TURNOVER and high-band ROLL OFF selection dials to tailor the amplifier to perfectly suit the EQ filter that each vinyl record was originally produced with – provides greater flexibility than most stand-alone phono stages are able to offer.  

Quality Throughout

The RA180 features one balanced and three unbalanced inputs alongside the built-in phono stage. There’s also support for a subwoofer output, a trigger connection and two grounding points alongside the 16 speaker output terminals, which support the connection of two different sets of stereo speakers. But the wide array of features, technologies and connectivity options are all able to perform optimally thanks to the new power supply design. 

 The power supply was developed exclusively for the RA180 and employs Silicon Carbide FET technology, with its high voltage support and heat resistance, to provide a high output in an efficient manner with low heat generation. It also responds to power delivery fluctuations well with its 2.5kW class PFC circuit, oversized capacitors and damping factor above 200. The result is a power supply that responds to the needs of the system, while always allowing the amplifier to sound as clean and natural as possible.  

Powerful. Elegant. Complete amplification.

The RA180 is unlike anything on the market. The level of flexibility on offer is reflective of the value HiFi Rose aim to deliver at all price points, yet the innovative technology and materials used throughout the design sets the amplifier up as something capable of astonishing soundscapes. It delivers the pure, natural sound passionate music lovers expect, but in an entirely new way.   

Key Features:

  • Next-generation Class AD (Advanced D) amplifier design with 800W output 
  • Gallium Nitride FETs in the amplification stage deliver perfect linear output 
  • Four amplifier modules to support Bridge Tied Loads or Bi-Amping speaker connections 
  • Frequency range spans up-to 100kHz to deliver a wide and deep sound stage 
  • Separate outputs for two sets of stereo speakers 
  • Built-in moving magnet and moving coil phono stage with simple switch selection 
  • Phono stage has adjustable EQ to accommodate any vinyl record with faithful reproduction 
  • Active crossover for high frequency output to support Super Tweeter frequencies 
  • Tonally flat output design, complemented by Bass and Treble tone controls 
  • Bypass Power Amp mode suits more complex system configurations 
  • Purpose-designed high-efficiency power supply with Silicon Carbide FET technology 
  • Distinct, retro-industrial aesthetic with high-purity aluminium construction in silver finish 
  • Dimmable VU meters 
  • IR remote control included 

Amplifier Out:

4Ω: 200W x 4ch (800W)

8Ω: 200W x 4ch (800W)

BTL Mode On: 400W x 2ch (800W)

Input Sensitivity:

Balanced Input: 2,000mV

Unbalanced (Line 1,2,3) Input: 1,000mV

Phono (MM/MC) Input: 5mV/0.5mV

Impedance Input:

Balanced Input: 44kΩ

Unbalanced (Line 1,2,3) Input: 47kΩ

Phono (MM/MC) Input: 47kΩ

Bandwidth (0dBr±3dB/8Ω):

Speaker Output: 10Hz ~ 90kHz

H/F Speaker Output: 10Hz ~ 90kHz

Frequency Response (1W, 0±1dB/8Ω):

Speaker Output: 10Hz ~ 90kHz

H/F Speaker Output: 10Hz ~ 90kHz

THD Measure (Balanced & Unbalanced Input):0.005% (50W)Damping Factor (Speaker & H/F Speaker Output):>150Signal to Noise Ratio measure (S/N):

BTL 107dB

Balanced, Unbalanced: 105dB

Phono MM/MC: 80dB (MM), 60dB (MC)

Impedance Output:53mΩSubsonic Filter: On/Off Switch (-3dB):50HzTone Control: On/Off Switch - Bass(100Hz)/Treble(10kHz):±15dBCrossover: On/Off Switch – HPF (-3dB):600Hz~ 6kHzPhono Turnover:

Flat

300Hz (+7.7dB@100Hz)

400Hz (+11.7dB@100Hz)

500Hz (+13dB@100Hz)

700Hz (+14.5dB@100Hz)

Phono Roll-Off:

Flat

1.6kHz (-16dB@10kHz)

2.1kHz (-13.7dB@10kHz)

3.18kHz (-11.7dB@10kHz)

3.4kHz (-8dB@10kHz)

6.36kHz (-5dB@10kHz)

Trigger:Trigger can be turned on: 3.3v ~12VSize:

430(W) X 350(D) X 110(H)

Including Feet: 430(W) X 391(D) X 100(H)

Weight:16.7kgBody:High-Purity AluminiumPower:SMPS (800W)Voltage:AC100-230V, 50/60HzRemote Control IR Input:38kHz Infrared Ray (Within 10m of operating distance)

UK Deliveries

Within the UK we aim to ship all items same day, however during busy periods it can take 1-3 days for dispatch. We ship all items with premium courier services which quote 1-2 days for delivery. Please note these times may be effected due to circumstances outside our control. Shipping is free on all orders over £50.

Ireland Deliveries

Following Brexit, We are still able to ship into Ireland, and no further VAT or charges apply. All Irish orders will dispatch from our N.Ireland warehouse, and therefore no charges apply. Shipping is free on all Irish orders over £50.00. 

Europe Deliveries

For deliveries in Europe, we have two options which can be chosen by the customer. 

N.Ireland - We can ship your goods from our N.Ireland warehouse, in which case we must charge VAT however due to N.Ireland's free trade agreement with Europe you will therefore not be charged any import duty or further costs. Shipping costs are calculated at the checkout based on destination. 

Britain - We can ship orders from our British warehouse (UK Mainland) which will be charged ex VAT, however this will require export paperwork, and import duty and applicable charges will apply. VAT is removed at the checkout if your destination is applicable.   

Non EU Countries 

If you are purchasing from a Non-EU country, you will not be charged VAT which will be deducted at the checkout. Import duties and further applicable charges may apply depeding on your country. Shipping is calculated at the checkout based on destination.  

We have several deomonstation areas in both of our branches. Please give us a call on 03435236169 or email support@kronosav.com to enquire about hearing products at your local branch. 

Please always contact us before to make sure the product(s) are available

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!

Details

Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

Why not ask and see how much you HiFi is worth!

To find out how much your HiFi is worth... Click Here

If you have any question, please feel free to call us on 03435236169 or email support@kronosav.com

About
HiFi Rose
HiFi Rose is a HiFi Media Player brand that resembles a rose. ROSE' representative identity 'audio with screen' Users can operate the screen intuitively and conveniently. You can experience the deep impression of high-definition sound with video.

Our Customer Love Us

 

  • Next-Generation Class AD Amplifier
  • Retro-Industrial aesthetic with high-purty aluminium construction
  • Tonally flat output with Bass and Treble adjustment controls
  • Bi-Amping or Bridge Tied Loads options via four amplifier modules

 

RA180 Integrated Amplifier

The RA180 integrated amplifier has been carefully considered, crafted and constructed to challenge contemporary expectations and deliver a near-perfect, natural sound that defies entrenched beliefs. Unique input and output options alongside user-adjustable features to suit any premium audio system ensures the use of this elegant 800W Class AD amplifier is an experience to behold.  

Sound Design

The overall design of the RA180 perfectly complements the award-winning RS150B music streamer in its overall impression. However, its semi-exposed, retro-industrial aesthetic is one that sits at home in any premium audio system. Constructed from high-purity aluminium, the chassis houses a wealth of complex engineering inside.  

A New Standard in Amplifier Design

The RA180 is based around a new concept Class AD Amplifier technology. Class D amplification provides higher efficiency and higher output, as well as improved noise and distortion measurements, compared to more traditional Class AB designs. However, many Class D designs in the past have suffered in sound quality, due to limitations in the digital circuitry. HiFi Rose’s state-of-the-art Class AD amplifier resolves these problems with the use of innovative new materials. 

 The RA180’s Class AD amplifier boasts Gallium Nitride FETs as opposed to more common Silicon FET technology. The result of this design is a high-speed, perfectly accurate amplification stage with almost no dead time, allowing it to perform far more naturally, like a pure analogue amplifier.  

Multi-Output Design

The RA180 boasts two 200W amplifier modules per-channel. One amp is optimised for stable mid-bass and balance, while the other is designed to deliver smooth, clean power to the high frequencies, spanning up into the super tweeter area well beyond 20kHz. The result is a sophisticated bi-amplification solution from a single box, where, when the two modules per-channel are connected to a speaker’s high and low-frequency inputs separately, the driving force to the speaker is clean, controlled and directed without interference. 

To help control the high frequencies, the RA180 is equipped with a user adjustable active crossover. The H/F CROSSOVER section allows users to set the base high-frequency output from 600Hz to 6,000kHz for a perfect matching of the connected speakers. The high-frequency amplifier module will then support playback up-to 100kHz (@ -3dB) to help shape a wide and deep sound stage that feels natural and without limitation.   

 Finally, the two amplifier modules per-channel can also be set to Bridge Tied Loads (BTL) mode, allowing for a single pair of speaker cables to connect to each speaker while still benefiting from 400W of rich, balanced sound.  

Customisable Experience

The RA180 boasts a host of other customisable features. The Bass and Treble tone controls allow users to adjust the flat frequency response at 100Hz and 10kHz, respectively, with ±15dB gain for a fully tailored sound. There’s also the finely adjustable balance control slider to precisely set the signal split between both channels. Alternatively, the BYPASS.POWER AMP mode links the source connected to the LINE 3 input directly to the power amplifier stage without going through the pre-amplifier. This is particularly useful for home theatre applications, allowing the RA180 to power the front speakers in a home cinema system without having to manage multiple volume dials.  

 Elsewhere the built-in MM and MC compatible phono stage – which is equipped with low-band bass TURNOVER and high-band ROLL OFF selection dials to tailor the amplifier to perfectly suit the EQ filter that each vinyl record was originally produced with – provides greater flexibility than most stand-alone phono stages are able to offer.  

Quality Throughout

The RA180 features one balanced and three unbalanced inputs alongside the built-in phono stage. There’s also support for a subwoofer output, a trigger connection and two grounding points alongside the 16 speaker output terminals, which support the connection of two different sets of stereo speakers. But the wide array of features, technologies and connectivity options are all able to perform optimally thanks to the new power supply design. 

 The power supply was developed exclusively for the RA180 and employs Silicon Carbide FET technology, with its high voltage support and heat resistance, to provide a high output in an efficient manner with low heat generation. It also responds to power delivery fluctuations well with its 2.5kW class PFC circuit, oversized capacitors and damping factor above 200. The result is a power supply that responds to the needs of the system, while always allowing the amplifier to sound as clean and natural as possible.  

Powerful. Elegant. Complete amplification.

The RA180 is unlike anything on the market. The level of flexibility on offer is reflective of the value HiFi Rose aim to deliver at all price points, yet the innovative technology and materials used throughout the design sets the amplifier up as something capable of astonishing soundscapes. It delivers the pure, natural sound passionate music lovers expect, but in an entirely new way.   

Key Features:

  • Next-generation Class AD (Advanced D) amplifier design with 800W output 
  • Gallium Nitride FETs in the amplification stage deliver perfect linear output 
  • Four amplifier modules to support Bridge Tied Loads or Bi-Amping speaker connections 
  • Frequency range spans up-to 100kHz to deliver a wide and deep sound stage 
  • Separate outputs for two sets of stereo speakers 
  • Built-in moving magnet and moving coil phono stage with simple switch selection 
  • Phono stage has adjustable EQ to accommodate any vinyl record with faithful reproduction 
  • Active crossover for high frequency output to support Super Tweeter frequencies 
  • Tonally flat output design, complemented by Bass and Treble tone controls 
  • Bypass Power Amp mode suits more complex system configurations 
  • Purpose-designed high-efficiency power supply with Silicon Carbide FET technology 
  • Distinct, retro-industrial aesthetic with high-purity aluminium construction in silver finish 
  • Dimmable VU meters 
  • IR remote control included 

Amplifier Out:

4Ω: 200W x 4ch (800W)

8Ω: 200W x 4ch (800W)

BTL Mode On: 400W x 2ch (800W)

Input Sensitivity:

Balanced Input: 2,000mV

Unbalanced (Line 1,2,3) Input: 1,000mV

Phono (MM/MC) Input: 5mV/0.5mV

Impedance Input:

Balanced Input: 44kΩ

Unbalanced (Line 1,2,3) Input: 47kΩ

Phono (MM/MC) Input: 47kΩ

Bandwidth (0dBr±3dB/8Ω):

Speaker Output: 10Hz ~ 90kHz

H/F Speaker Output: 10Hz ~ 90kHz

Frequency Response (1W, 0±1dB/8Ω):

Speaker Output: 10Hz ~ 90kHz

H/F Speaker Output: 10Hz ~ 90kHz

THD Measure (Balanced & Unbalanced Input):0.005% (50W)Damping Factor (Speaker & H/F Speaker Output):>150Signal to Noise Ratio measure (S/N):

BTL 107dB

Balanced, Unbalanced: 105dB

Phono MM/MC: 80dB (MM), 60dB (MC)

Impedance Output:53mΩSubsonic Filter: On/Off Switch (-3dB):50HzTone Control: On/Off Switch - Bass(100Hz)/Treble(10kHz):±15dBCrossover: On/Off Switch – HPF (-3dB):600Hz~ 6kHzPhono Turnover:

Flat

300Hz (+7.7dB@100Hz)

400Hz (+11.7dB@100Hz)

500Hz (+13dB@100Hz)

700Hz (+14.5dB@100Hz)

Phono Roll-Off:

Flat

1.6kHz (-16dB@10kHz)

2.1kHz (-13.7dB@10kHz)

3.18kHz (-11.7dB@10kHz)

3.4kHz (-8dB@10kHz)

6.36kHz (-5dB@10kHz)

Trigger:Trigger can be turned on: 3.3v ~12VSize:

430(W) X 350(D) X 110(H)

Including Feet: 430(W) X 391(D) X 100(H)

Weight:16.7kgBody:High-Purity AluminiumPower:SMPS (800W)Voltage:AC100-230V, 50/60HzRemote Control IR Input:38kHz Infrared Ray (Within 10m of operating distance)

UK Deliveries

Within the UK we aim to ship all items same day, however during busy periods it can take 1-3 days for dispatch. We ship all items with premium courier services which quote 1-2 days for delivery. Please note these times may be effected due to circumstances outside our control. Shipping is free on all orders over £50.

Ireland Deliveries

Following Brexit, We are still able to ship into Ireland, and no further VAT or charges apply. All Irish orders will dispatch from our N.Ireland warehouse, and therefore no charges apply. Shipping is free on all Irish orders over £50.00. 

Europe Deliveries

For deliveries in Europe, we have two options which can be chosen by the customer. 

N.Ireland - We can ship your goods from our N.Ireland warehouse, in which case we must charge VAT however due to N.Ireland's free trade agreement with Europe you will therefore not be charged any import duty or further costs. Shipping costs are calculated at the checkout based on destination. 

Britain - We can ship orders from our British warehouse (UK Mainland) which will be charged ex VAT, however this will require export paperwork, and import duty and applicable charges will apply. VAT is removed at the checkout if your destination is applicable.   

Non EU Countries 

If you are purchasing from a Non-EU country, you will not be charged VAT which will be deducted at the checkout. Import duties and further applicable charges may apply depeding on your country. Shipping is calculated at the checkout based on destination.  

We have several deomonstation areas in both of our branches. Please give us a call on 03435236169 or email support@kronosav.com to enquire about hearing products at your local branch. 

Please always contact us before to make sure the product(s) are available

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!

Details

Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

Why not ask and see how much you HiFi is worth!

To find out how much your HiFi is worth... Click Here

If you have any question, please feel free to call us on 03435236169 or email support@kronosav.com