Technics SU-R1000E-S

Most high-end audio amplifiers are analogue. Analogue amps boast a long history, and their sound quality improvement technologies, such as circuit systems and parts development, are regarded as having been fully established. Digital amps, on the other hand, still have great potential for further development since rapid technical advancements in recent years have enabled high-accuracy signal processing not possible with analogue systems. Given that today’s mainstream music sources are digital, such as CD and streaming platforms, digital signals should ideally be processed in the original digital format. Furthermore, devices such as AD converters are also advancing, allowing high-precision digital signal processing of analogue music sources.

Under such circumstances, Technics has been devoted to the development of digital amp technology since 2014. In creating the SU-R1000 Reference Class product, Technics took the following technical approaches.

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The sheer ability that the SU-R1000 demonstrates is hard to ignore. It can handle vastly different pieces of music without breaking sweat, it can drive pretty much anything that takes your fancy and it has socketry for any occasion.

High-grade Digital/Analog I/O Circuit
The phono input section and analogue input section feature a full-discrete circuit design. Technics has realised an ideal, symmetrical circuit layout and performed meticulous tuning. The new circuits prevent interference between the right and left channels and achieve excellent channel separation. Furthermore, the phono input section and XLR input section employ completely balanced transmission to ensure high-purity signal transmission with minimum effect of noise. The USB input circuit in the digital input section is equipped with a capacitor of high-quality ruby mica and a power conditioner with nonmagnetic carbon film resistors for blocking electrical noise e.g. from a PC and for minimising the effect of external noise. The A/D converter incorporates a high-performance chip made by Asahi Kasei Microdevices (AKM) for high-precision A/D conversion. Thus, the SU-R1000 reproduces outstanding sound quality from any analogue or digital input sources.



JENO Engine
Jitter is a major cause of distortion in digital systems, and is caused by mis-timing in the master clocks used in digital-to-analogue conversion. To eliminate the degradation of sound caused by jitter, Technics has developed an original jitter reduction circuit, comprising a clock generator in the noise-shaping system to reduce jitter in the low-frequency range and a high-precision sample rate converter for suppressing jitter in the high-frequency range. Thus it reduces jitter in an ideal way over the entire frequency range. This works with original high-precision PWM (Pulse Width Modulation) conversion circuit, optimising the noise-shaping speed, the degree and re-quantisation number, and the PWM gradation, in order to convert high-resolution signals to PWM without causing any damage to the dynamic range. These technologies enable Technics digital amplifier designs to reproduce the natural and delicate nuances of music.




Advanced Speed Silent Power Supply
The SU-R1000 uses a switching power supply system to ensure a stable supply of voltage and current required by the digital amp. In a conventional switching power supply system, the ON time of the switching operation was controlled in order to stabilise the voltage, and this causes the switching frequency to fluctuate according to the load, resulting in a modulation noise to affect the sound quality. The Advanced Speed Silent Power Supply has eliminated this noise by fixing the switching frequency in the 400kHz band. Furthermore, a Super Low Noise Regulator is provided in the later stage. This prevents the decrease of regulation resulting from the fixed switching frequency and impedes the mixing of noise component into high frequencies. The result is a high-response power supply that results in the best performance from the digital amplifier.




Accurate Digital Technology JENO Engine (Jitter Elimination and Noise-shaping Optimisation)
Technics Definitive Design High-rigidity Cabinet
FTC Output Power 150W + 150W ( 1kHz, T.H.D. 0.5 %, 8Ω, 20kHz LPF ),
Input Sensitivity / Input Impedance LINE 200 mV / 22 kΩ, PHONO (MM) 2.5 mV / 47 kΩ, PHONO(MC) 300uV /100Ω
Frequency Response LINE 5 Hz-80 kHz (-3 dB, 8 Ω),
Load Impedance 4 Ω-16 Ω
Analogue Input Terminal LINE x 2 (LINE 1, LINE2), LINE XLR BALANCED x1, PHONO (MM/MC) x1, PHONO XLR BALANCED(MC) x1, MAIN IN x1, REC IN x1
Digital Input Terminal Optical digital x2 (OPT 1, OPT 2) , Coaxial digital x2(COAX 1, COAX 2), USB-B x2 (PC 1, PC 2)
Analogue Output Terminal PRE OUTx1, REC OUT x1
Headphone Output Yes, Stereo Φ6.3mm
USB-DAC (USB-B) USB 2.0 high-speed ,USB Audio Class 2.0, Asynchronous mode
Support Codec
Power Supply AC 120 V ,60 Hz
Power Consumption 220 W
Dimensions (W x H x D) 430 mm x 191 mm x 459 mm
Weight Approx. 22.8 kg
Accessories Remote Control, Calibration Record, AC Cord, Owner's Manual