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S500 Stereo Amp


Description ▴

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The world’s leading DACs needed an amplifier to match. The result was a clean slate design that could meet our DAC’s ultra high dynamic range head on. With the amplifier’s architecture optimized in critical areas, audio performance, longevity, and an ability to drive any speaker became our principal design parameters. We redefined the idea of what an amplifier can be, embedding the S500 with a fully modular design alongside a 1.0 Farad Power Core, a matched impedance input stage and an all billet CNC case. The finest amplifier we’ve ever created, the 500 series redefines excellence and sets a new bar in the industry.

Design without compromise.

The S500 features a discrete design featuring a class A matched impedance input stage. This result is a product with minimized signal reflections, input noise, and distortion while also maximizing power transfer and dynamic range in a zero negative feedback design. With custom low-noise high-current toroidal transformers and rugged high-current output buffers, the S500 provides a transparent, holographic listening experience that’s completely fatigue free. All components were meticulously chosen for their sonic performance and longevity, ensuring your amplifier is built to last.

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Product Specifications ▾

Static Power Consumption 270 Watts On
Standby power less than 2 watts
Operating Voltage Range 120/240V (Auto switching)
100V (Fixed)
Fuse 1/4″x1-1/4″ 15A 250V Slow Blow
Input 2x XLR Input
Output 1x Binding post set per channel
Controls Gain switch
Input Impedance Switch
On/Off Button
Standby button
Display Dimmer
12V Mode Switch
2x MSB 12V trigger port
Continuous Power Output (8Ω) < 1% distortion 500 W
Continuous Power Output (4Ω) < 1% distortion 900 W
Frequency Response (20 to 20kHz) ±0.025dB
Signal to Noise (20 to 22kHz) >136dB (>140dBA)
Equivalent Input Noise (22kHz BW) 0.5μV
Crosstalk @ 2kHz <-110dB
Low Gain (75Ω source impedance) 16.2dB
Medium Gain (75Ω source impedance) 22.2dB
High Gain (75Ω source impedance) 28.2dB
Input Impedance (User Selectable) 75Ω / 300Ω / 1.2kΩ
Output Impedance (20 to 20kHz) 0.07Ω
Input/Gain Stage – Class-A
– Double balanced
– Impedance matched
– Fully discrete
– Independent power and transformer
Output Stage – Class-AB
– Balanced
– High bias
– Current gain only
Chassis Dimensions
Width: 15 in (381 mm)
Depth: 23.25 in (590 mm)
Height: 10.5 in (267 mm) Without Feet
11 in (279 mm) With Feet
Weight: 135 lbs (61.25 kg)
Product Feet: M6X1 Thread
3 or 4 Foot Configuration
Shipping Dimensions
Width: 23 in (585 mm)
Depth: 35 in (889 mm)
Height: 21 in (534 mm)
Weight: 194 lbs (88 kg)

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