Small amps with big sound

AMP6 is a small amplifier based on the Tripath TA2020 chip. These models where developed on request from people who did not feel comfortable soldering small surface mount components and turned out to sound just as well as the surface mount versions.

AMP6 is available in two models:

• AMP6 The original version, includes a regulated power supply. You need to add a transformer. 
• AMP6-BASIC Designed to be as simple as possible. This version is without power supply section, and with jacks / screw headers for all connetcions. The simplest to build of all our models. All tests of this amp was done with an external 35W SMPS shown below.

	AMP6	AMP6-BASIC
Power supply	Voltage regulator, rectifier and bulk capacitor on the PCB. Add transformer 12 to 15 VAC or 16-20VDC	External 12V typical, 14.5VDC MAX Connector 2.5/5 mm
Over-voltage protection	Yes, by voltage regulator	No
Polarity protection	Yes, by rectifier	Yes, by power diode
Cable connections	By soldering to board	Jacks / screw headers
Status LEDs	Yes	No
Inductors	Toroids that you wind	Ready made
Fuse holder / fuse	No	2AG size 5x15 mm, 4A slow
Footprint & height	43X100X40mm	50X80X30mm

Some quotes about AMP6

"Detail was excellent and the sound stage wide and deep. In short, a very good sounding amplifier"  TNT-Audio review of AMP6:

"I was impressed with how intuitive the amp 6 boards were to build,.... and I ended up listening to it for 5 hours straight on the bench." Andrew

• AMP6 and AMP6-BASIC are both based on the Tripath TA2020 chip
• Two analogue inputs/outputs (stereo).
• The output power is around 2x25W RMS maximum, into 4 ohms at 10% THD+N. Up to about 2X15W, the THD+N is below 0.1%.
• Audiophile sound quality
• For both models hole mounted components are used, and a few, relatively large, surface mount power diodes.
• All resistors are metal film type.
• The AMP6 board has the power supply on the board. Just add a transformer of 12 to 15VAC. The on board power supply consists of a 8A rectifier bridge, a quality high ripple low ESR 18.000 uF bulk capacitor, a LM1084 low dropout 5A voltage regulator set to 14.5V, a high quality high ripple low ESR 1800 uF closeup capacitor.
• The boards are high quality, made with double weight (2OZ) 70um thick copper, holes plated through, and component print on both sides