[🎶SG] UNITRA WSH-805 Integrated Stereo Amplifier With Dual-Mono Design

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UNTRIA WSH-805 Integrated Stereo Amplifier With Dual-Mono Design

> Integrated stereo amplifier with dual-mono design. Inspired by the golden stereo era of the 1970s. Timeless design with swing-out indicators and patented automatic switch technology. Made with current feedback topology, with great performance of all-analog audio path, especially ideal audio channel separation and unique sound clarity. It features a class change function and a wide range of signal inputs, including balanced inputs.

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Descriptions:

> Timeless Design
> The amplifier has a classic design inspired by the 1970s and is built using premium-grade components.

> Timeless Interface
> The interface using pivot indicators and bistable switches in a new iteration in our patented automated version - an unmistakable beauty with added functionality and convenience.

> Durability
> Weighing in at 22 kilograms, Unitra’s powerful amplifier comprises 1586 parts housed in a massive metal chassis.

> All-analog Stereo Integrated Amplifier.
> The inspiration for the WSH-805 was the legendary Unitra WSH-205 amplifier, little known in Poland because it was so good that it was mostly produced for export. In our estimation, it represented the pinnacle of our stereo audio technology. Inspired by this leading representative of the golden era of analog stereo of the 1970s, we created it anew, improving everything that could be used with modern advances , but leaving the main concepts. That's why the WSH-805 is fully analog, with no digital signal processing elements that can interfere with the original sound of the original analog signal.
> The result is the closest amplifier to the original sound, which in its essence is analog.

> Winner Of The Red Dot 2023 Award
> The WSH-805 amplifier has been recognized by the jury of the best design competition and was among the narrow winners of this elite competition.

> Dual-mono Architecture
> Each channel uses a separate preamplifier and power amplifier to ensure the best possible channel separation. 

> Current Feedback Topology
> While being more challenging to implement, this topology offers improved performance in terms of dynamic range and feedback.

> Power Block Reinvented
> A proprietary power block based on discrete circuits - a unique sound that differs significantly from that in devices based on "off the shelf" integrated circuits.

> Clear And Distortion-free Sound
> The solutions used made it possible to achieve a signal-to-noise ratio of more than 100 dB, providing exceptionally clear sound without noise.
> Very low distortion levels: harmonic distortion (THD) 0.0008% at 1 kHz / 8 Ω / 40 W and intermodulation distortion (IMD) 19 - 20 kHz at 10 W < 0.0015% will allow you to hear sound without tonal blemishes, so reproduced exactly as the artist intended.

> Changing The Class Of Work
> A unique feature of changing from Class A to Class AB operation with a dedicated switch on the front panel gives you the choice between maximum efficiency translating into loudness or maximum linearity of operation.

> Traditional And Balanced Analog Inputs
> A rich set of RCA inputs, plus a pair of balanced XLR inputs for the most discerning analog audio enthusiasts, so they can connect the signal source in a way that minimizes the impact of interference from the source to the amplifier. 

> Phono Preamplifier With Cartridge Type Selection Function
> A dedicated phono preamplifier with a choice of MM or MC modes allows connection of any cartridge currently available on the market.

>  Built-in Headphone Amplifier
> Dedicated low-impedance headphone amplifier allows you to connect Hi - End class headphones directly to the amplifier. Thanks to the optimally selected parameters, each pair of headphones plays in optimal conditions for each other.

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Specifications:

RMS Output Power (THD+N ≤1%, both channels driven, according to IEC 60268-3)
> Class AB, 8Ω : 2x 80W
> Class AB, 4Ω : 2x 125W
> Class A, 8Ω : 2x 8W
> Class A, 4Ω : 2x 16W

Headphones Jack Output Power 32Ω : 130mW

Input Sensitivity and Impedance (at output THD+N ≤1%, according to PN-EN IEC 60268-3)
> Phono MM : 7.1 mV RMS, 47kΩ
> Phono MC : 1.8 mV RMs, 24Ω
> Direct In : 1200 mV RMS, 20kΩ
> Balanced : 200 mV RMS, 48kΩ
> Line In (AUX1, AUX2, Tunerr, CD, Streamer) : 760 mV RMS, 81kΩ 

Maximum Input Voltage (1kHz, no damage)
> Phono MM : 10 mV RMS
> Phono MC : 2 mV RMS
> Direct In : 1300 mV RMS
> Balanced : 3150 mV RMS
> Line In (AUX1, AUX2, Tuner, CD, Streamer) : 3150 mV RMS

Frequency Response (8Ω, 3W output power, both channels driven, AUX1, AUX2, Tuner, CD, Streamer inputs)
> -1.0 dB Point : 12 Hz - 56 kHz
> -3.0 dB Point : 6.3 Hz - 110 kHz

Rated Output Voltage and Impedance (any input with voltage equal to sensitivity)
> Pre Out : 1V RMS, 10Ω

Total Harmonic Distortion plus Noise versus Power (Class AB, 1kHz, 8Ω load, speaker output, both channels driven, AUX1, AUX2, Tuner, CD, Streamer inputs)
> 1W : <0.0008%
> 8.3W : <0.0025%
> 40W : <0.0014%

> Damping Factor (1kHz, 8Ω) : >160
> Slew Rate : >40V/µs
> Channel Separation (Class AB, 1kHz, 10W, AUX1, AUX2, Tuner, CD, Streamer inputs) : 100dB
> Signal-to-Noise Ratio (SNR) : 102dB
> Tone Control Characteristics 50Hz / 20kHz
> Intermodulation Distortion (CCIF IMD) : 19 + 20kHz @ 10W <0.0015%

Inputs
> RCA : Aux 1, Aux 2, Tuner, CD, Streamer, Phono + GND (MM / MC), Direct In
> XLR : Balanced

Outputs
> Speaker Terminals : A / B / AB ; 6.3mm Headphone Output ; Pre-Out

Adjustments
> Bass ; Treble ; Contour (smart adaptive contour)
> Linear (tone control bypass)
> Balance

Other
> Electrical Ratings: 230V AC, 50Hz, 500W
> Energy Consumption (standby) : 0.5W
> Dimensions : 440 x 385 x 143 mm (17.3 x 15.2 x 5.6 in)
> Weight : 18kg (39.7lbs)
> Gross Weight : 22kg (48.5lbs)
> Insulation Category : Class I
> EMC Environment : Group 1 Class B
> Package Contents: Power Cord, Remote Controller With Battery, Owner's Manual, Warranty Card

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