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The DIY500 mkII is a framework kit in 500-series format which allows DIYers to make their own configurations of opamps, transormers, and passive components. Eisen’s website does provide a guide for choosing passive the components, but this kit assumes a fairly extensive knowledge of components and part sourcing. As of June, 2011, the DIY500 is discontinued.
Images courtesy of Eisen Audio
Notable Features:
- Contains a PCB and proprietary components for mounting in a 500-series rack
- PCB accomodates 45 different opamps, 50+ input transformers, and at least 14 output transformers
- Blank faceplate
- 500 series
Price: Sadly discontinued 
Vintage Transformers on eBay:
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MERCURY MAGNETICS DELUXE OUTPUT TRANSFORMER EARLY '50'S | See Details |
0d 1h 51m |
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MERCURY MAGNETICS HARVARD OUTPUT TRANSFORMER LATE 50'S | See Details |
0d 2h 4m |
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OUTPUT TRANSFORMER II 6V6 6AQ5 6E6 6E5 6BQ5 7189 42 | See Details |
0d 3h 10m 0 bids |
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New Genuine Peavey Output Transformer |
Auction See Details |
0d 7h 34m 0 bids |
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COIL WINDING- Audio Input/Output Transformer Design V-2 | See Details |
0d 8h 59m |
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UREI B11148 Output Transformer, all LA-3A, 1176LN Rev F | See Details |
0d 11h 20m |
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Sea Gull Lighting 9378-98 Brushed Stainless Single Output Transformer | See Details |
0d 14h 26m |
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JEFFERSON CONCERTONE 487-105 Tapped Input Transformer plate to push pull grids |
Auction See Details |
0d 15h 2m 0 bids |
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Vestax IS08 Input Transformer Switch for PMC-08 Pro | See Details |
0d 15h 58m |
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UTC A10 transformer LA2a input transformer |
Auction See Details |
0d 16h 52m 1 bids |
More information at www.eisenaudio.com.
Aeromotor Studio’s parts lists for possible DIY500 builds.
