R30 is a Hi-End master piece of integrated amplifier with 2x200W class A output by Dssun!
Specifications:
- Power output: 200 watts per channel at 8Ω / 360 watts per channel at 4Ω (The above power ratings measured from 20Hz-20 kHz with no more than 0.3% THD)
- Frequency response: within 0.5 dB from 20Hz to 20 kHz
- Audio Inputs: two pairs balanced on XLR; Three pairs single-ended on RCA
- Audio Outputs: one pair Dussun-designed speaker binding posts; One pair record outputs on RCA
- Other Connectors: one IEC AC mains receptacle
- Gain: 6, 12, or 18 dB in the line stage ; 26.8 dB in the amplifier section
- Volume control range: 80.0dB
- Gain resolution: 0.1 dB steps above 31 in display (-50.0 dB) (With slowly increasing step size at progressively lower levels)
When gain is set to +18 dB: 2V on XLR, 1V on RCA
When gain is set to +12 dB: 4V on XLR, 2V on RCA
When gain is set to + 6 dB: 8V on XLR, 4V on RCA
- Output impedance: less than 0.07Ω, 20 Hz -20,000 Hz
- Power consumption: 160VA at idle - 1500 VA maximum at 4Ω, rated output
- Mains voltage： 220V(+/-15%) 50/60Hz
About R30:
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 is aimed at the clear objective for sound quality and tone improvement.In order to achieve high fidelity output music signals by R30 against the music source, output characters matching electrodynamic loudspeakers’ electric-sound characters, design of R30 went through a long time repeated audition, measurement 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 spatial information from those familiar CDs which was missed before. R30, 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.
Technical Features:
● Ultra high-end 0.1db steps, left and right channel fine synchronized high precision volume control:
Considering the volume control device as one of the souls of an amplifier, R30 employed Dussun developed volume control device, set up by a 16-bit digital controlled analogue circuit and possessed 1/65,535 level super fine resolution within whole volume control range. This volume control comprising circuit high linear solid state switch and precise resistance, ensured precise synchronization of R30’s left and right channel volume control at any position within its 80 dB volume control range. All 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. Either in 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 0.1db steps volume control”.
● Low distortion, Non-feedback Power output stage:
The newest designed “Optimized Self-Adaptive Bias Circuit” Improved significantly the linearity in output stage signal crossover region, while maintaining huge power output without switch distortion. Much different from routine design which removed output stage feedback resulting in highly increased non-linear distortion, especially at high frequency range, R30 accomplished super low crossover distortion by its “Optimized Self-Adaptive Bias Circuit”. Along with the most nature and spacious tone from a “non-feedback at output terminal amplifier”, R30 achieved the perfect result of full power output, low distortion, high sound quality in the whole audio frequency.
● Thorough independent dual-mono channel full balanced design:
R30’s left and right channel circuit as well as control units were equipped with individual independent power supply system. Data used to control individual channel was transmitted in terms of optical transmission. Absolute electric isolation made R30 true to its name, dual mono channel amplifier, which working as same as two sets of precisely synchronized independent mono channel amplifiers, nil stereo crossover between left and right channel, resulting in pinpoint accurate sound images.
● Strong control and pre-set functions:
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 functions remote control unit
Exclusive Dussun gold-plated high-current audio connectors
Detachable power cord system (IEC
