Flying Mole DAD M100 pro amplifier

摘要

For a long while digital amplification has promised improvements over conventional analogue amplification in a number of ways. Who wouldn't want an amp physically smaller than its analogue counterpart, that offers greater efficiency with less heat dissipation, is more affordable due to its sheer simplicity and which has the potential to be an almost perfect amplifying device - the straight wire with gain? [See Keith Howard's digital amp feature, Nov '04]. The reality has been that Class 'D' amplifiers have relegated themselves to car audio and subwoofer applications due to potential HF distortion issues. There have been exceptions: TacT Audio has used sophisticated DSP manipulation to avoid this problem; and the Tripath Class T digital amplifier module has had increasing success, with products from ESLab, in the shape of its DX-S80 [HFN July '04), and prototypes from Townshend Audio showing that these designs can take on traditional linear amplifier technology. But then these examples employ large transformers and power supplies.