R30 was an integrated amplifier developed and handcrafted elaborately to re-render full music sprit and connotation,whose design reference benchmark is state of the art counterpart hi-end integrated amplifiers’performance, tone, function, construction and fabrication. Based on decades of experiences on research, development and handcraft for audio amplifiers by Dussun, every new design in R30 aimed at the clear objective for sound quality and tone improvement.In order for its output music signal by R30 possessing high fidelity against the music source, output characters matching electrodynamic loudspeakers’ electric-sound characters, The design of R30 went through a long time repeated audition, measure and improvement process, which made the finished R30 achieve the ideal matching level for signal magnification circuit, volume control circuit, power supply system and interior construction. In addition to the technical specification for a hi-end amplifier deserved, R30’s sound possessed outstanding quietness, rich details, dense timbre and transparent and spacious tone. It escorted the audience to rediscover the performing atmosphere and rich sound spacial information from those familiar CDs which missed before. R-30, made under the principle of uncompromising, became the first reference level integrated amplifier in Dussun product family by means of high performance and
high sound quality.
0.1dB step.left and right channel fine synchronized high precise volume control
problems of sound quality degradation and application intervention from frequency and phase distortion, volume synchronization error, sliding friction noise, limited lifetime attribute to traditional volume control potentiometers’ various voltage ratio, was eliminated by R30 volume control. Either working principle or practical performance, R30 reached the highest technical level fully among the state of the art hi-end amplifier volume control and pride upon taking part in “Club of 0.1 dB volume control”.
Low distortion, Non-feedback at poweroutput terminal,Power output stage:
Thorough independent dual-mono channel design:
Strong control and pre-set function:
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
About “Hyper Class A”
The “Hyper Class A” is a “Green” Class A solution, whose technically successful adaptive-bias circuit achieves the extra large class A power output objective under conditions of low-power consumption and low heat producing. The adaptive-bias circuit with an ideal specification permits the amplifier to maintain class A mode output even if the speakers’ impedance drops largely and output power increases several times. This situation is different from the traditional pure class A amplifiers’ inevitable situation of returning to class B when the speaker load impedance goes down, and is much close to the ideal class A amplifier essence.
