Stereo Integrated Amplifier with Dual-Mono Design
- A fully analogue integrated stereo amplifier in dual-mono architecture, inspired by the legendary Unitra WSH-205. Built without compromise from 1,586 high-quality components, weighing 18 kg, winner of the Red Dot 2023 award.
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Timeless design
We wanted to create an amplifier that would stay with you for decades.
That is why we drew inspiration from the 1970s — the golden era of stereo audio technology. It was then that the canon of the analogue stereo amplifier was established, and it has survived with only minor changes to this day. We decided not to compromise and to draw directly from the source — hence the timeless appearance of the WSH-805 amplifier.
Timeless interface
An interface featuring VU meters and bistable switches in a new incarnation — our patented automated version — offering timeless beauty combined with functionality and convenience.
Durability without compromise
Because we want our amplifier to serve you for years, we built it ourselves, without compromise, from the highest quality components. The result is a powerful amplifier weighing 18 kg, assembled from 1,586 components housed in a solid metal enclosure.
Our products come with a 2-year warranty, extendable upon registration.
Fully analogue integrated stereo amplifier.
The inspiration behind the WSH-805 was the legendary Unitra WSH-205 amplifier — little known in Poland because it was so good that most of its production was destined for export. In our assessment, it represented the pinnacle of Unitra's stereo audio engineering. Inspired by this leading representative of the golden age of analogue stereo in the 1970s, we recreated it from scratch, improving everything possible using the achievements of modern technology, while preserving its fundamental principles. That is why the WSH-805 is fully analogue, with no digital signal processing elements that could interfere with the original sound of the analogue signal.
The result is an amplifier closest to the original sound — which, in its very essence, is analogue.
Red Dot 2023 Award Winner
The WSH-805 amplifier was recognised by the jury for best design and joined the select circle of winners of this prestigious competition.
Dual-mono architecture
The WSH-805 is an amplifier built without compromise, including in terms of architecture. That is why we opted for the costly but best-performing dual-mono architecture, which provides the greatest possible channel separation: the amplification of the left and right channels is handled independently. Each channel has its own preamplifier and power amplifier. This layout achieves the best possible channel separation of >100 dB — a significant reduction in crosstalk — which in turn improves stereo precision and elevates it to a level rarely encountered in integrated amplifiers.
Current Feedback topology
We employed the so-called "current feedback" topology — more demanding to implement correctly and therefore less commonly used, but, when carefully designed, delivering better results in terms of signal dynamics and feedback behaviour.
In particular, the circuit provides a more uniform feedback characteristic as a function of frequency — and consequently flat total harmonic distortion (THD) and low transient intermodulation distortion (TIM). This is a highly desirable characteristic and is regarded as an indicator of clean sound.
Newly engineered power stage
A proprietary power stage based on discrete components — a unique sound character that differs significantly from devices built around off-the-shelf integrated circuits.
Clean, distortion-free sound
The solutions employed achieve a signal-to-noise ratio above 100 dB, delivering exceptionally clean, noise-free sound.
An extremely low distortion level — harmonic (THD) 0.0008% at 1 kHz / 8 Ω / 40 W and intermodulation (IMD) 19–20 kHz at 10 W <0.0015% — will let you hear sound without tonal colouration, reproduced exactly as the artist intended.
Operating class switching
A unique function allowing the operating class to be switched between Class A and Class AB via a dedicated front-panel switch, giving the user the choice between maximum efficiency — translating to higher volume — and maximum linearity.
Conventional and balanced analogue inputs
A comprehensive set of RCA inputs plus a pair of balanced XLR inputs for the most demanding analogue audio enthusiasts, allowing signal sources to be connected in a way that minimises interference from source to amplifier.
Phono preamplifier with cartridge type selection
A dedicated phono preamplifier with MM or MC mode selection enables connection of any cartridge currently available on the market.
Built-in headphone amplifier
A dedicated low-impedance headphone amplifier allows Hi-End headphones to be connected directly to the amplifier. Thanks to optimally matched parameters, every pair of headphones performs under ideal conditions.