SU-R1000: Reference Class Stereo Integrated Amplifier
- JENO Engine (Jitter Elimination and Noises-haping Optimisation)
- ADCT (Active Distortion Cancelling Technology)
- LAPC (Load Adaptive Phase Calibration)
- Advanced Speed Silent Power Supply
- Four Independent Power Supply Units
- Intelligent Phono EQ
- Input and output terminals made of meticulously selected high-quality parts
- Speaker terminals designed to allow connection of extra-large diameter speaker cables
- Y-lug terminals for ensuring reliable cable connection
- Neutrik-manufactured analogue balance input terminals and PHONO XLR input terminals (exclusively for MC)
- Analogue input terminals with gold-plated, machined brass parts
- Attractive front panel embellished with high-quality hairline surface finish and equipped with an iconic, large dual-needle meter
- Volume dial and selector knob made of parts machined from solid aluminum blocks and spin-finished
ADCT (Active Distortion Cancelling Technology)
The Active Distortion Cancelling Technology newly developed by Technics accurately extracts and removes distortion in the power output stage which is generated by the speaker’s counter electromotive force and voltage drops. In the Hi-Fi audio market where an unlimited number of audio systems can be configured by combining various products, high-end audio amplifiers need to optimally drive a diversity of speakers. The Active Distortion Cancelling Technology accurately extracts distortion by determining the difference between the speaker terminal output and JENO output and then applies correction to the output digital signal, thus correcting the conventional digital amp system. This provides powerful speaker driving force and acoustic energy while offering the superior benefits of a digital amplifier, such as low noise, precise sound image and expansive sound ambience, regardless of the types of connected speakers.
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 stabilize 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.
Intelligent Phono EQ
The Intelligent Phono EQ mounted in the SU-R1000 utilizes the sound quality improvement technology for DSP, which Technics has accumulated through the development of LAPC, in order to realize high sound quality not possible with analogue Phono-EQ. This technology consists of three parts: 1. Accurate EQ Curve, 2. Crosstalk Canceller and 3. Response Optimizer. These functions can be turned ON/OFF to suit the user’s preference.
Accurate EQ Curve – Made possible by hybrid analogue/digital circuit design
An accurate EQ curve is achieved by a hybrid analogue-digital system. The high-gain low-pass filter (LPF) performs analogue processing, while high frequencies are raised after the A/D conversion. The use of the 40-dB LPF(Low-pass filter) in the analogue region suppresses the bit loss during digital filter processing, and high frequencies are raised with high accuracy in the digital region to achieve a high S/N ratio.
Crosstalk Canceller - For measurement and improvement of crosstalk characteristic unique to each cartridge
This function measures the crosstalk characteristic of the installed cartridge by using the crosstalk measuring signal recorded on the Calibration Record bundled with the SU-R1000. It then performs reverse-correction using the built-in DSP to achieve significant improvement of the crosstalk characteristic. This results in a more precise sound image and a wider sound ambience.
PHONO Response Optimizer - For correction of disturbance in cartridge frequency characteristics
This function measures the frequency characteristics of the installed pickup cartridge by using a TSP (Time Stretched Pulse) signal recorded on the bundled Calibration Record, and corrects characteristics disturbance. It corrects the effect of impedance matching between the pickup cartridge and the phono equalizer to reveal the true sound quality of the cartridge. This technology aims to improve sound quality by avoiding a selector such as a switch in the high-sensitivity phono input line for the removal of the possibility of noise disturbance.