diytube.com

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Replace your waxy old 7199-based driver board with the new diytube ST70 driver. This driver uses a single 12AX7 and a pair of 12AU7's for pure triode perfection allowing use of an almost limitless selection of NOS and new tubes. The diytube ST70 driver employs the classic modified Mullard topology with constant current source in the tail of the phase splitter - a perfect mix of performance and warm tube sound.

It is a bare driver without components meant for experienced tube hobbyists, including:

* FR-4 fiberglass construction that will last a lifetime
* top & bottom silkscreen ensuring easy assembly and friendly modding
* a red solder mask finish that accents any amp design
* the original numbering scheme greatly simplifying board swap with wire markers
* a robust manual with detailed schematics, voltage & resistance charts, and thorough test data
* a parts list with Mouser.com part numbers and easy cut-n-paste Mouser BOM
* email support provided and a growing community forum here at diytube.com
* preview the manual http://www.diytube.com/st70/diytube_st70_B.pdf (~300k PDF)

Most parts can be purchased easily through Mouser, and vendors are suggested for the others (ie tubes and tube sockets). Go to diytube ST70 forum for more info and pictures.

Cost:
$49 plus $4.90 for worldwide delivery


'Stuffed' PCB Using Auricaps (no parts supplied with PCB):


Old & New for Comparison (this is the Phenolike colored board - just a few left in stock):