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  • Model: Dussun R10
  • Shipping Weight: 22kg

R10 Reference Dual Mono Design Preamplifier

R10 was a high grade preamplifier developed and handcrafted elaborately to re-render full music spirit and connotation,whose design reference benchmark is state of the art counterpart the top hi-end preamplifiers’ performance, tone, function, construction and fabrication.

As might be expected, the R10 uses a dual mono design that isolates each channel from the other. We use separate power supplies for the two audio channels in R10, and additional, completely separate power supplies for the control, display and communication circuitry in the Controller. In fact, there is a diecast aluminum wall between the two channels in the Preamplifier, separating Left from Right channels physically as well as electrically.

The remarkable efforts to preserve isolation between channels in the R10 deliver superior imaging specificity and accuracy, creating a vividly rich, three dimensional sonic image.

In addition to the isolation between channels, isolation between inputs in the R10 is unsurpassed. By using a discrete “T-switch” input switching along with special shielding and board layout, the selected source effectively has the preamplifier “all to itself.” By effectively “unplugging” inputs not being used, this design delivers better than 120 dB separation between even adjacent input connectors, ensuring that you hear only the source you intend to hear, without even subtle contamination from other active source components.

The R10 Reference Preamplifier is fully balanced from input to output. In fact, even single-ended inputs are converted to balanced upon entering the preamp, and are handled in a balanced fashion thereafter. The rigorous implementation of the balanced circuitry within the R10 conveys all of the information present in the source signal to the power amplifier, without the limitations of assymetrical single-ended designs.

Precision electronic control of analog volume has been a standard feature of Dussun preamplifiers. Dussun introduce revolutionary volume precision and resolution to the R10 preamplifiers, with the 0.1 dB-step volume control. The R10 uses 98 surface-mounted, precision resistors per channel.This balanced volume control gives us over 65,000 possible volume settings between zero- and maximum-attenuation (Don’t worry, we don’t use them all.), it delivers greater transparency than any volume control technology we have ever experienced. It also provides increments as small as 0.1 dB, allowing you to select precisely the correct volume for any given recording, and to do so repeatably. Local supply regulation and passive bypass components are used to assure optimum results.

The R10 Reference Preamplifier includes two of main outputs per channel: one of balanced outputs on high quality XLRs, and one of single-ended outputs on RCA jacks. The XLR and RCA outputs are buffered independently of each other, and may be used simultaneously without degrading performance.

Three power supplies divide the task of providing clean and stable DC power to the various circuit elements. Common mode and differential filtering capacitors are used on the AC mains input to pre-filter high frequency noise.

All control and display circuitry are powered from a separate, low-voltage DC supply. This approach also prevents noise generated by control and display circuitry from finding its way into the audio circuits.

As one would expect in a Dussun amplifier, left and right channel audio circuits are powered by two independent power supplies. Custom-designed R-type transformers are used to reduce the AC mains voltage to the proper that required for the audio supplies.
Independent rectification and filtering is followed by active regulation for voltage gain and volume control circuits.

Separate power supplies for left and right channels ensure that demand from one channel cannot modulate the power supply of the adjacent channel. This dual-mono approach results in the most effortless reproduction of dynamic contrast as well as stable and detailed stereo imaging.

A newly designed remote offers complete control in a small and elegant package.

The user interface of the R10 is rooted in the advanced design of the R10 Reference Preamplifier. Large knobs for volume and input select help the unit retain the tactile benefits and functionality of traditional preamplifier designs. Of particular interest, inputs may be named appropriately, and the selector knob cycles only between those inputs. The R10 can operate as if it were custom-designed for each source component.

Regardless of the technology used, numerous details must be executed to fully realize the potential of a Dussun design. The quality of individual components, the care and craftsmanship with which they are assembled and the exhaustive inspection and testing we employ help raise the value of Dussun products. The R10 is built to the same high construction standards as all other Dussun products.

Individually pre-set gain level for all input terminals
Individually pre-set channel name for all input terminals
Display screen brightness adjustable for 4 levels
Maximum volume pre-set to protect expensive loudspeakers
Fade-in volume when switching on
Aluminium full function remote control unit

Gain: 6, 12, or 18 dB line stage
Volume control range:80.0 dB
Gain resolution: 0.1 dB steps above 31 in display (-50.0 dB)
Output Impedance: 50Ω XLR 25Ω RCA
Maximum Output : 16V XLR 8V RCA
Input Impedance: 50KΩ
THD+Noise: ≤0.001%
Crosstalk: ≤-120dB
Frequency Response: 10Hz-40KHz ±0.5dB
Signal to Noise Ratio: ≥105dB A-weighted
Overall Dimensions: 440W×97H×400Dmm


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