- I/O (input to output) Direct Symmetrical Design
- Full-stage balanced signal transmission
- Floating balanced power amp
- Fully balanced control amp
- Three parallel balanced volume and tone controls
- Four large capacity power supplies for power amp
- Shunt type local regulators for preamplifier
- Discrete headphone amp for low-impedance drive
- Discrete phono amp with high-precision head amp and equaliser amp
- Specially designed feet
Full-Stage Balanced Signal Transmission
The A-S2000 achieves fully balanced signal transmission from input to output (balanced design refers to the use of two signal conductors that have equal impedances to ground). Balanced transmission is capable of cancelling noise produced internally and e...
Full-Stage Balanced Signal Transmission
The A-S2000 achieves fully balanced signal transmission from input to output (balanced design refers to the use of two signal conductors that have equal impedances to ground). Balanced transmission is capable of cancelling noise produced internally and externally, and so is considered to be an ideal amplification method, eliminating the sound quality degradation caused by noise. If it is only partially adopted, however, it will be largely ineffective and may even have negative effects. The A-S2000 is the world’s first integrated amp to offer full-stage balanced transmission, combining high power output with good sound texture and outstanding S/N performance. Its capabilities will be heard to best effect when paired with the CD-S2000 CD player, which employs the same principle.
Floating Balanced Power Amp
The Floating Balanced Power Amp configuration is completely different from the pure complementary circuit design that has been the mainstream of HiFi amps for nearly forty years. It adopts an output element having identical polarity on the plus and minus sides of the output stage, with both sides having their own power supply and feedback, thereby achieving total symmetry of pullable operation at the output stage. The power supply unit has four floating elements (no restrictive grounding connections), two for each channel, so plus and minus and completely symmetrical.
Parallel Volume and Tone Controls
To ensure ideal fully balanced operation, the volume and tone control systems must be extremely precise. Conventional analogue volume systems suffer from gang error, and cannot achieve sufficient accuracy, even when using high precision parts. Therefore, for the A-S2000 we developed a unique method: cancelling out slight precision differences by the parallel operation of three high sound quality digital volume ICs for each channel and operating the system with an analogue encoder. When using the bass and treble tone controls, each of the three volume elements is applied in succession, and during tone default, three equivalent volume elements for each channel are used for volume adjustment. This ensures the best sound quality during both tone control and default operation.
The A-S2000 has four large capacity power supplies for the power amp that are completely isolated from ground. Shunt type local regulators that prevent degradation of sound quality by amperage fluctuation ensure a clean and stable power supply for the preamp. Naturally, parts that directly affect sound quality such as the large power supply transformer and carbon sheath block capacitors were chosen only after careful evaluation.
The A-S2000 has a completely symmetrical construction intended to achieve the ultimate in integrated amp left-right separation, equal to that of separate amps. A central reinforcing bar ensures that the chassis is rigid and stable.
Super Audio CD
Audio format based upon the current CD standards but includes a greater amount of information that provides higher quality sound. There are three types of discs: single layer, dual layer and hybrid discs. The hybrid disc can be played on existing CD players as well as Super Audio CD players since it contains both standard audio CD and Super Audio CD information.
“Super Audio CD” is a trademark.
CD Text Display
Audio & Video
Receiver / Integrated Amplifier
|Maximum Power (4 ohms, 1 kHz)||190 W + 190 W|
|Minimum RMS Output Power (4 ohms, 20 Hz-20 kHz)||150 W + 150 W|
|High Dynamic Power/Channel (8/6/4/2 ohms)||105/135/190/220 W|
|Maximum Input Signal (CD etc, 1kHz, 0.5%THD)||2.8V|
|Frequency Response||5 Hz-100 kHz (+0 dB/-3 dB)|
|Total Harmonic Distortion (CD to Sp Out, 20 Hz-20 kHz)||0.015%|
|Signal-to-Noise Ratio (CD)||98 dB (S: 150 mV)|
|Input Sensitivity (CD)||150mV/47k ohms|
|Dimensions (W x H x D)||435 x 137 x 465 mm; 17-1/8” x 5-3/8” x 18-5/16”|
|Weight||22.7 kg; 50 lbs.|