Products & Data Sheets
Musical Power Supplies, Inc. designs and builds it's own unique designs for Vacuum Tube Audio Transformers. MPS Transformers will typically offer more features and flexibility in inputs and outputs than most other designs or the standard 'classic' transformers. If you need multiple input impedances or outputs, we've got your transformer.
Special care is taken in our designs to attain a great product for the money. Years of professional experience in manufacturing and global sourcing magnetics parts is put to use here to get the hobbyist a great product at a great price.
We are proud of our EBay feedback ratings and track record since 2006 in providing great service as well as products. We have a genuine interest in tube amps and look forward to helping you meet your needs in all of your projects. If we don't offer or can't build what you need, we will always try and guide you to the right solution.
MPS Warrantees it's products to be free of Manufacturing Defects for 1 year from the date of shipment. We reserve the right to review all claims and will replace parts that do not fail from mis-application or user damage. Our goal though is to collect satisfied, repeat customers and if you have any questions or concerns about our products please feel free to contact us directly to discuss and review by email at matt@musicalpowersupplies.com.
It's far easier to fix a problem before you use the wrong transformer than afterwards. If you have a question, please ask.
Product Specifications
Spec Sheets for our Inductors
Technical Details on the L4M35 USA Choke for low power tube power supplies
L4M35_USA_STD.pdf
Adobe Acrobat document [96.7 KB]
Technical Details on the L4M50 Standard Choke
L4M50-STD-DWG-MIM.pdf
Adobe Acrobat document [136.7 KB]
Spec Sheets for our HiFi/Radio Transformers (new)
Technical Details of the OT10SE HiFi Versions offered in 5K:4/8ohm and 7K/4/8ohm versions
OT10SE_HF_DWG_USA.pdf
Adobe Acrobat document [237.3 KB]
Technical Details of the OT20PP Push-Pull HiFi Versions offered in 6K6:4/8ohm and 8K/4/8ohm versions
OT20PP_HiFi_DWG_STD.pdf
Adobe Acrobat document [245.6 KB]
Technical Details of the OT19PP-DYN-USA Push-Pull HiFi transformer 8K:4/8ohm for Dynaco ST35 (17.5W/CH) and similar amp projects.
OT19PP-DYN-USA.pdf
Adobe Acrobat document [162.7 KB]
Technical Details of the OT43PP-DYN-USA Push-Pull HiFi transformer 4K3:4/8ohm for Dynaco ST70 (35W/CH) and similar amp projects.
OT43PPM_DYN70_USA.pdf
Adobe Acrobat document [151.5 KB]
Technical Details of the OT2PP USA Low Power PP Output Xfmr
OT2PP_USA_DWG_STD.pdf
Adobe Acrobat document [75.8 KB]
Technical Details of the OT3SE USA Low Power PP Output Xfmr
OT3SE_USA_DWG_STD.pdf
Adobe Acrobat document [75.4 KB]
Technical Details of the OT8SE USA SE Output Xfmr for 4 to 6W SE Amplifiers
OT8SE_MX_DWG_STD.pdf
Adobe Acrobat document [190.3 KB]
Technical Details on the OT5PP Low Power PP Output Xfmr- stocking model
OT5PP_STANDARD.vsd.pdf
Adobe Acrobat document [159.4 KB]
Technical Details on the OT5PP+ USA Low Power PP Output Xfmr
OT5PP+_USA_DWG_STD.pdf
Adobe Acrobat document [68.3 KB]
Technical Details on the OT10SE USA in Open Frame Construction
Visio-OT10SE_STD_DWG.pdf
Adobe Acrobat document [124.5 KB]
Technical Details on the OT10SE USA in HC87 End Bells (Low Profile)
Visio-OT10SE_HC87_DWG.pdf
Adobe Acrobat document [158.1 KB]
Technical Details on the OT10SE USA in VC87 End Bells (Vertical)
Visio-OT20PP_VC87_DWG_STD.pdf
Adobe Acrobat document [123.9 KB]
Technical Details on the OT20SE USA in standard channel frame mount
OT20SE_USA_STD_DWG.pdf
Adobe Acrobat document [154.3 KB]
Technical Details on the OT20SE USA in HC100 end bell
OT20SE_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]
Technical Details on the OT20SE USA in FM100 Vertical end bell
OT20SE_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]
Technical Details on the OT12PP PLUS now with 8K and 10K inputs for "tweed" projects
OT12PP+STD.pdf
Adobe Acrobat document [197.8 KB]
Technical Details on the OT12PP USA in Open Frame Construction
OT12PP_USA_DWG_STD.pdf
Adobe Acrobat document [69.1 KB]
Technical Details on the OT16PP USA in Open Frame Construction
OT16PP_USA_STD_DWG.pdf
Adobe Acrobat document [208.9 KB]
Technical Details on the OT17PP USA in Open Frame Construction
OT17PP_USA_STD_DWG.pdf
Adobe Acrobat document [208.3 KB]
Technical Details on the OT20PP USA in Open Frame Construction
OT20PP_USA_STD_DWG.pdf
Adobe Acrobat document [117.0 KB]
Technical Details on the OT20PP USA in HC87 End Bells (Low Profile)
OT20PP_HC87_DWG_STD.pdf
Adobe Acrobat document [162.2 KB]
Technical Details on the OT20PP USA in VC87 End Bells (Vertical)
Visio-OT20PP_VC87_DWG_STD.pdf
Adobe Acrobat document [123.9 KB]
Technical Details on the OT19PP USA in Open Frame Construction
OT19PP_USA_STD_DWG.pdf
Adobe Acrobat document [157.2 KB]
Technical Details on the OT19PP USA in HC100 Horizontal end bells
OT19PP_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]
Technical Details on the OT19PP USA in FM100 Vertical end bells
OT19PP_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]
Technical Details on the OT22PP USA in HC100 Horizontal end bells
OT22PP_USA_HC100_DWG.pdf
Adobe Acrobat document [176.1 KB]
Technical Details on the OT33PP USA in HC100 Horizontal end bells
OT33PP HC100 DWG.JPG
JPG File [144.3 KB]
Technical Details on the OT20SE USA Standard in channel frame
OT40PP_USA_STD_DWG.pdf
Adobe Acrobat document [156.6 KB]
Technical Details on the OT40PP USA in Horizontal End Bell
OT40PP_USA_HC100_DWG.pdf
Adobe Acrobat document [169.1 KB]
Technical Details on the OT40PP USA in Vertical End Bell
OT40PP_USA_FM100_DWG.pdf
Adobe Acrobat document [138.6 KB]
Power Transformers
Technical Details on the PT190.1 USA Power Xfmr
PT190.1_USA_VC87.pdf
Adobe Acrobat document [94.4 KB]
Technical Details on the PT240.1 USA Power Xfmr
PT240.1_USA_VC87.pdf
Adobe Acrobat document [94.3 KB]
Technical Details on the PT190.2 USA Power Xfmr
PT190.2_USA_DWG.pdf
Adobe Acrobat document [112.9 KB]
Technical Details on the PT275.2 & PT275.2i USA Power Xfmrs
PT275.2_USA_DWG.pdf
Adobe Acrobat document [112.9 KB]
Technical Details on the PT290.2 USA
PT290_2_FM100_DWG.pdf
Adobe Acrobat document [100.3 KB]
Technical Details on the PT325.2 USA
PT325.2_USA_DWG.pdf
Adobe Acrobat document [470.4 KB]
PT190MI USA, PT275Mi USA, PT285Mi USA, PT330Mi USA & PT350Mi USA spec
PT_M_FM200_CASE (1).pdf
Adobe Acrobat document [328.9 KB]
Technical Details on the PT350M-TWD-USA
PT350M-TWD-USA_DWG.vsdx.pdf
Adobe Acrobat document [108.8 KB]