2011年4月1日 · Along with Avery Fisher’s 500c, David Hafler’s ST-70 put high performance audio in the American home. Introduced in 1959, the ST-70 is the world’s most prolific stand alone amplifier with over 300,000 units manufactured. Amazingly, its clear, three-dimensional sound is comparable to many amplifiers made today.

The Hafler DH-500 power amplifier is a “big brother” to the company’s widely acclaimed DH-200, embodying many of the same design concepts with a thorough reengineering to deliver high-power performance with high reliability.

2010年3月3日 · The XL-280—dubbed the Excelinear amplifier (for "Excels in Linearity")—is, according to Hafler, the first amplifier ever designed to meet the extremely stringent demands of the SWDT, which is probably true.

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2018年1月6日 · The DH 220 is my favorite of the Hafler amplifiers. That sounded great, and decently reliable.

The Hafler DH-200 is a 100 watts-per-channel MOSFET class AB stereo power amplifier. MOSFETs are solid-state devices that work on principals more similar to vacuum tubes than bipolar transistors — and it sounds great!

The Hafler SE120 is a very high quality 60 watts-per-channel MOSFET class AB stereo power amplifier. MOSFETs are solid-state devices that work on principals more similar to vacuum tubes than bipolar transistors — and it sounds great!