Amplifiers

Condition commensurate with age, works 100% correctly. The Nakamichi Amplifier 2 is an integrated amplifier with a focus on sound quality, with harmonic time alignment technology at the core. The Harmonic Time Alignment Theory was developed by Steve Kalison of the Nakamichi US Research Center as a result of many years of research focusing on the characteristics of NFB itself. It directly addresses the timing of the fundamental sound and the distortion component and the action of NFB. In Amplifier2, a newly developed amplifier circuit based on this theory is used in both the preamplifier and power amplifier sections. This circuit has a wide-band, low-gain open-loop design that keeps the amount of NFB in the audio band constant and suppresses the amount of NFB itself slightly. This circuit combines techniques that correctly adjust the phases of the fundamental sound and distortion components over the entire audio band.

Condition commensurate with age, works 100% correctly. The Pioneer A400 is a no frills 'audiophile' amplifier that set the 'cat among the pigeons' when it was introduced in 1990. Hi-Fi magazines greeted it with a chorus of praise. Comparisons with amplifiers costing up to 1,000 were made, confirming that the A400 is a 'giant killer'. 25,000 units were sold in the first 18 months, securing an extraordinary 12.8% of the total amplifier market. Soon, the Pioneer A400 attained something of a cult status. A400X model was introduced later but the demand was still for the original A400 and the production continued till 1996. It won the coveted Product of the Year by the What Hi-Fi? magazine - an accolade that had never before gone to a Japanese company.