The circuit concept of Takumi K-70 was designed about 20 years ago - coupling of two single ended class A "modules" into a bridge configuration. Such approach avoids the application of output transformers. It employs a novel "reactor" power flow arrangement yielding great sonic benefit. It was a hybrid architecture without mosfet output devises. K-70 remains today, for some as still the finest sounding amplifier regardless of price.
And now comes 匠心 K-160 in 2019. It redefines the notion of what it means to be “the most ultimate power amplifier". The new power amp eliminates the use of tube. Robert can now design something significantly better than his own 20-year old (or any other) tube circuit. The tube was a limiting factor in K-70s performance. Also gone are the acoustically noisy transformers. But still, 匠心 retains a "Reactor" power supply contained within each mono block, which is 4 times the physical size of those inside K70.
For the input stage, a super quiet, unusually high voltage power supply design based upon the phenomenal Takumi MC One phono equaliser with "Super Ground" integral.
The output stage employs the most essential element - a double single-ended class A topology with an idle current in excess of eight amps, with a ten fold reduction in distortion while delivering four times the power power into low impedances. Both the new input stage and the newly adapted, unique output stage further contribute to the absence of "smearing".
The holistic architecture of 匠心 makes it technically special. These unique electronic design features translate into continuous moment of senses and sensibilities to the betterment of genuine musicality. Dynamics float effortlessly. Speed transcends itself while resolution remarkably unveiling endless hidden details palpably with astounding beauty and clarity cohesively.
All operation Class A (100%) into any impedance. No push pull operation either. These facts alone already make 匠心 unique!
150W / 8 ohm @ less than 1% THD (any mode)
230W / 4 ohm @ less than 1% THD (high power mode)
120W / 2 ohm @ less than 1% THD (high power mode)
Signal to Noise
105.5dB (A weight) @ 1W into 8 ohms. 125.5dB at 100W into 8 ohms
0.0009% at 5 watts into 8 ohm, 1KHz.
0.005% at 50 watts into 8 ohm, 1KHz.
550W at all times (high power mode)
400W at all times (normal mode)
0.05 ohms at 1KHz (damping factor is 160)
Greater than 10K ohms (SE, balanced or floating)
Voltage gain (SE, balanced or floating)
Weight: 45Kg per unit after unpacking
Dimension: 540mm deep 396 wide and 280 high
There is a power mode switch on the back of the amp. Most users should set it to "Normal". For those who play loud into low sensitivity 4 ohm speakers, they may engage the high power mode.
There is an approximately 150W increase in power consumption per channel in high power mode.
Actual power consumption is about 550W static on high power mode and 350W static normal power mode per mono amplifier.
It is an honour and a privilege to
introduce 匠心 K-160 to Audio
Exotics and the forum.
I do apologise for the time it took to
bring 匠心 K-160 to life. It
was in truth, rather more work than anticipated. Work that is the
blood of my life. I sincerely hope this amplifier will take you on
new musical journeys.
By the way, no typos in the
specification Chris has posted.
With best regards,