Stereos & Home Audio>>Audio>>Electronic Components & Supplies>>Gold>>Honest Alpha Nirvana 39w Se Class A Amplifier
Products Name:Alpha Nirvana 39W SE Class A Amplifier
Categoris name:Electronics & Accessories/Audio/Stereos & Home Audio
Another Alpha amp featuring the Aksa Lender topology front end, but this time with a Hugh Dean designed reactive CCS on the output to permit a Single Ended Push-Pull (SEPP) amp with great 44% thermal efficiency (90W dissipation) in full Class A mode.Requires only +/-27v rails and standard 4U x 300mm chassis passive cooling.Amp uses externally mounted output MOSFETs with custom snubber helper PCBs (included 2 per amp board) that provide flexibility and convenience of mounting. PCB has UMS compliant mounting holes - tested to work in DIYA Store’s Dissipante 4U x 300mm UMS heatsink chassis.Recommended use of SLB PSU (sold separately in this shop) with single 600VA 24v trafo (Antek AN-6224 or equivalent) or dual SLB with dual 300VA 24v trafos. Amp has been fully tested and verified to work and sound superb. No adjustments necessary and amp has circa 5mV DC offset. Bias current is set at approximately 1.7A. See thread for discussions on how to increase current for lower impedance speakers.Current design is for 8ohms.Amp has been measured to produce 41w before clipping.Board has handy built in LED clip indicator - Molex KK connector for remote LED mounting.Measured distortion is 0.0048% at 1W and 0.017% at 10W.
Sold as Each (two needed for stereo). Includes helper MOSFET snubber mounting PCBs (1 pair per amp). 2mm FRP, 2oz Cu, ENIG finish, Blue solder mask.
Boards currently in stock and ship immediately.
More info here:https://www.diyaudio.com/forums/solid-state/344540-alpha-nirvana-39w-8ohm-class-amp.html
Thank you to Hugh Dean for the wonderful design, and JPS64 for the superb professional layout.
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