- The stereo preamplifier is equipped with top-quality components, making it an exceptional choice.
- The 728A preamplifier utilizes the renowned Wada Shigeho Style Electric Circuit, resulting in exceptional performance characterized by dynamic range, high/low frequency response, resolution and signal-to-noise ratio.
- The inclusion of tone control, featuring treble and bass adjustment with a bypass function, is an essential attribute that garners significant interest from numerous customers seeking this amplifier.
- Incorporating 4pcs of paper-in-oil capacitors and German WIMA capacitors for coupling effect enhances the auditory experience by imparting a warm and nuanced sound quality.
- Tubes integrated into the window, meticulously arranged and visually appealing PCBA layout, exquisitely anodized face plate, robust connectors, high-quality Japan potentiometers.
input impedance: 100k ohm Output impedance:600 ohm Total hamonic distortion: less than 0.01 Percent Frequeney responses:20Hz-30Khz -1db Signal to noise Ratio:90db Input jack:4 groups Output jack:2groups AC Voltage:AC110220V 60hz50hz Size:435 X 90 X 290mm Tubes:12AT7 X 2,12AU7 X 2,6Z4 X 2 Size:435 X 90 X 290mm Working environment: Temperature:5-40degree Humidity:35 Percent -80 Percent
