Andrew Pilling
1-STOTHERT & PITT LTD PREAMP
This OTL preamp was constructed from odds & ends. The bits and pieces that I used for this project included a wooden cigar box that was used as the base, a gutted out vintage Oster Scientific massage device, which was used to conceal a small transformer that had the adequate secondaries I needed for this project. (4) 2.5" x 6.5" Pyrex cylinders (used in old style kerosene miners lamps) to enclose each vacuum tube. To top off the project, I used this STOTHERT & PITT LTD name plate that sits on top of the Pyrex cylinders. Next I secured the base, Pyrex cylinders and name plate with two copper aircraft turnbuckles, which holds these pieces tightly in place. This preamp also incorporates (3) stereo inputs, Line and headphone outputs, a (3) position selector switch, volume and balance controls. My OTL preamp does it's job well and provides a transparent bridge between the source and the muscle. Note of possible interest: I researched the STOTHERT & PITT LTD name plate and found out that the name plate comes from a machine that the company refers to as a pedestrian maintenance roller used on sports fields etc!.
1-STOTHERT & PITT LTD PREAMP
This OTL preamp was constructed from odds & ends. The bits and pieces that I used for this project included a wooden cigar box that was used as the base, a gutted out vintage Oster Scientific massage device, which was used to conceal a small transformer that had the adequate secondaries I needed for this project. (4) 2.5" x 6.5" Pyrex cylinders (used in old style kerosene miners lamps) to enclose each vacuum tube. To top off the project, I used this STOTHERT & PITT LTD name plate that sits on top of the Pyrex cylinders. Next I secured the base, Pyrex cylinders and name plate with two copper aircraft turnbuckles, which holds these pieces tightly in place. This preamp also incorporates (3) stereo inputs, Line and headphone outputs, a (3) position selector switch, volume and balance controls. My OTL preamp does it's job well and provides a transparent bridge between the source and the muscle. Note of possible interest: I researched the STOTHERT & PITT LTD name plate and found out that the name plate comes from a machine that the company refers to as a pedestrian maintenance roller used on sports fields etc!.