Sony TA-A1ES CLASS A INTEGRATED AUDIOPHILE AMPLIFIER (TAA1ES) HiRes Silver - $1,190 - (Lafayette, LA)

Sony TA-A1ES Class A Integrated Amplifier Used less than three months. Flawless / Near mint. Includes original box and packing, remote, and owners manual. High resolution FET minimalist design. It has a hefty toroidal transformer – 300VA –, generous power supply capacitor provision, and a dual mono circuit layout, with one of the hefty power modules seen above each side of the chassis. The impedance controllable headphone amplifier is definitely a plus. The whole amplifier is built on what the company calls its Frame Beam Base chassis: this is a development of its established Frame and Beam design, providing extra support at critical points, and uses an additional rigid baseplate, with no fewer than four layers of metal underneath the transformer. Even the dual monaural layout is a direct mirror image, so the load on the chassis is balanced. Buffer amps are used in both the preamp and power amplifier stages in the quest for optimum sound quality, and the preamp uses relay switching for inputs and is built from discrete components rather than going down the cheaper, but usually poorer-sounding, amp-on-a-chip route. The power amp, meanwhile, uses a simple push-pull design, with a single pair of transistors driving the speaker: as Kingdon’s white paper explains it, ‘In many cases large output amps employ a power amp stage with multiple transistors to achieve high current output volume, but transistors do not perform identically and emitter resistance is used to stabilise transistor variations. ‘In this amp however, the power amp stage features only one pair of transistors and a design that eliminates variations in each channel at the source, enabling elimination of variation-controlling emitter resistance as well.The amplifier is also designed to change its bias according to the volume setting, with the result that most users – unless they’re total volume-level maniacs and/or have extremely hard-to-drive speakers – will find the Sony is actually work…

Posted in Lafayette, LA, Electronics
From ebay.com - 1 month ago