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.
dual mono design
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.
extraordinary isolation 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. fully balanced design 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. the volume control
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. multiple outputs 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. the power supplies 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. the remote control and amp; user experience 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. Construction 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.
