Introducing The HiFi Rose RA180 Integrated Amplifier, Something Very Different!

[HiFi Lounge]

Hi Everyone,

So this is a little different, I've always said that HiFi Rose are a brand to keep an eye on, they have already given us 2 excellent streamers and an all in one player but now they have unleashed an integrated amplifier on the world and it really is like nothing I have seen before, needless to say I ordered one for demo straight away, I'm a sucker for something different and this really does look unique, can't wait to find out what all those dials and knobs do, it retails for for £5499 so certainly looks to be good value for money.

It has a built in MM/MC Phono Stage, Active Crossover ability, Tone Controls, App Control, it also sounds like it has some interesting amplifier technology inside also which is capable of up to 400 watts per channel, please see below from HiFi Rose -

'4 Mono Amplifiers - Multi Output Configuration using Modules

The HiFi ROSE RA180 consists of two modules: one AMP module specialised for stable mid-bass and balance, and another specialised for smooth high-pitched and super tweeter areas.

Each AMP module supports 200 W (8 Ohm) and can output up to 400 W per channel. When two independent modules are connected to a speaker's high and low frequencies separately, the driving force can be greatly improved without being affected by a counter electromotive force.

BTL mode combines two independent modules for rich, balanced sound.'

It is due with us soon as if you are as curious as me then feel free to get in touch to arrange a demo.

Please find some pics below and a link to the RA180 on our website -

https://hifilounge.co.uk/product-cat...nds/hifi-rose/

Cheers,

Paul.

[HiFi Lounge]

Hi All,

This is a real quick one to say that we now have the new and exciting HiFi Rose RA180 amplifier on permanent demo.

I really didn't know what to expect with this amp to be honest, the looks and features certainly left an impression when it was first announced but now I have had some hands on time I can also say that the build quality really is impressive too.

This is such a feature packed amp that I may have to read the manual, Ssshhh, don't tell anyone, that will certainly be a first for an analogue amp but I have it hooked up to our Wilson Audio TuneTots to start with which it is driving with ease.

Looking forward to getting to grips with this amp but if you'd like to come in for a demo anytime please feel free to get in touch to make an appointment.

https://hifilounge.co.uk/product-cat...nds/hifi-rose/

Thanks,

Paul.

[Puffin]

I suppose beauty is in the eye of the beholder, but at £5,500 it would really have to have something ground breaking inside it to make me consider listening to it. I had to go to their website to find out what was under the skin.

DESCRIPTION
SPECIFICATIONS
The RA180 is a state-of-the-art integrated amplifier using the latest innovative technologies. Power damping and dead times were reduced to 1/10 or less. Linearity was dramatically improved to create a near-perfect sound that transcends the boundaries between digital and analog.

New Concept Class AD Amplifier
The amplifier has developed from Class A to AB to Class D. Class AB was developed to improve the high heat generation and low efficiency of A. Class D has higher efficiency and higher output than AB, and also significantly improved S/N and THD characteristics compared to A and AB. However, the sound quality has been evaluated as inferior to A/AB due to the limitations of the digital circuit. The GaN class AD amplifier developed by HiFi ROSE has dramatically improved the problems of the existing Class D by applying innovative new materials.

Class AD Amplifier
Class D amplifiers have a topology that theoretically provides a perfect linear output at 0% distortion and 100% power efficiency. In order to achieve this, the switching action required high speed and accuracy. However, previous products were weak compared to Class A/AB in the linearity aspect due to the limitations of silicon FET, which couldn't produce a smooth and natural sounds. In the RA180, a new material, GaN FET, was used instead of Silicon FET to solve this problem. The dead time was dramatically improved to 1/10 or less, and a nearly perfect linear output was realised with a switching speed close to zero.

This linearity goes beyond the Class D limits and produces a smooth and natural sound, like an analog amplifier.

Multi Output Component
The RA180 consists of two modules: one AMP module specialised for stable mid-bass and balance, and another specialised for smooth high-pitched and super tweeter areas. Each AMP module supports 200W (8Ω) and can output up to 400W per channel. When two independent modules are connected to a speaker's high and low frequencies separately, the driving force can be greatly improved without being affected by a counter electro-motive force. BTL mode combines two independent modules for rich, balanced sound.

Designed to Play Up to the Super Twitter Realm
The human hearing range has an upper limit of 15-20 kHz. So, is there no need for higher frequencies? Temporarily high trebles extend well beyond 20 kHz, even in harmonious sound. For example, trumpets have a frequency response that extends to 100 kHz, and 88.2 kHz to 192 kHz sources have a 40 kHz to 96 kHz frequency response.

The RA180 is designed with a wide frequency response range so that even high-resolution sound sources with an output range of 20 Hz to 50 kHz, 100 kHz @ -3 dB, 200 kHz @ -6 dB. Although this playability may be outside a person's hearing range, it faithfully reproduces a wide frequency range, which contributes to expressing a deep and wide sound field with the original sound.

Balanced Power Supply
The power supply has been exclusively developed for the RA180 applies 4th generation SiC FET technology to provide high output with less heat. In addition, by using a self-developed PFC (power factor circuit), it is designed not to be affected by sudden load fluctuations.

The power supply device was developed to support a powerful damping factor of at least 200,l and the high output of 100 W is designed to produce powerful bass and soft treble.

PHONO Amplifier with Variable EQ
The purpose of the PHONO amplifier provided by the RA180 is for the recording producer to accurately reproduce the original intention. It also reproduced the original sound as it is, which is the principle of HiFi ROSE.

It is designed to respond to a variety of vinyl records with low-mid bass TURNOVER and high-frequency ROLL OFF adjustment functions.

Amplifies the very weak signal picked up by the cartridge and keep it as close as possible to the orignal sound. MOVING MAGNET and MOVING COIL STAGES are provided with a simple switch selection and EQ values corresponding to curves from various record manufacturers are provided using parts with a 0.1% tolerance.

Lots of technobabble.

[zanash]

As a new owner of both the ra180 and rs 150 ............I can add that the sound quality is exceptional too. The stand out points are pinpoint imaging, expansive depth great slam and weight. The rs 150 also sounded more vinyl than a highly rated tt of the mid 80's [and thats a first for any digital product]