콘라드 존슨 D/A-1 컨버터입니다.
사진의 윗모델입니다.

비트스트림 기술의 디지털부와 아나로그 출력부 그리고 전원부를 완전히 독립시켜 짜임새있는 내부회로가 돋보이는 컨버터이며, 콘라드존슨 특유의 중역대의 두툼한 질감과 부드러운 음색을 만들어주는 제품입니다.
디지털 입력은 광 코엑셜 BNC 각 1개씩이고 아나로그 출력은 언발란스 1조입니다.

전압 220볼트이고 상태 양호합니다.
판매가는 송료포함 75만원입니다.
지역은 전라광주이고 정국택배 가능합니다.

011-9615-1858
poohlover4364@hanmail.net

The D/A-1 was a digital to analog converter using FET analog circuitry. Data filtering in the D/A-1 is done by a digital linear phase filter. This filter was chosen because offered very low ripple, and an imposing 100 dB of rejection of the stop-band. It also handles the final error correction. Other filtering systems tended to sound much harsher.

Data Conversion is accomplished by a bit-stream DAC chip. Bit-stream chips offer the most musical performance, especially in the critical mid and high frequency ranges, contributing to the D/A-1’s smooth, extended highs.  

Analog filtering is done in the final stage of the D/A-1. This stage is a low-pass filter, designed to remove high-frequency (supersonic) artifacts of the conversion process. The analog stage is a second-order Bessel filter and buffer circuit using jfets, tin-oxide resistors, and all polypropylene and polystyrene capacitors.

The power supplies in the DA/1 are critical to the overall design. Separate discrete, regulated power supplies power the output filter and the analog circuits in the DAC. These power supplies use polypropylene and polystyrene exclusively. Separate power transformers, and a shielded compartment isolate the analog stage from the digital circuitry.

Specifications:
Sensitivity: 1.0VRMS output at 0dB(maximum output)
Band-pass: 5Hz to 20KHz, +0. -.5dB
Hum and Noise: better than 92dB relative to1.0V output
Distortion: less than 0.05% THD
Phase: 0, 180 degrees of phase shift, switch selectable
Inputs: BNC and RCA Coaxial, TOSlink optical, ST Glass optical optionally available
Output: BNC
Mechanical: 19” Wide X 3.315” High X 14 3/8” Deep
Weight: 16 lbs