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Musical Power Supplies, Inc.

Lake St Louis, MO 63367

 

 

Email: matt@musicalpowersupplies.com

New Products
MPS Ebay Store

To check out our newest projects , click here for New Stuff.

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 and we will 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

L4M50 USA Choke 4H x 50mADC
Technical Details on the L4M50 USA Choke
L4M50_USA_DWG_STD.pdf
Adobe Acrobat document [106.0 KB]

Low Power Output Transformers (< 5 Watts)

OT2PP USA Push Pull Low Power Output Xfmr, 22K5:4,8 Ohm at 2VA
Technical Details of the OT2PP USA Low Power PP Output Xfmr
OT2PP_USA_DWG_STD.pdf
Adobe Acrobat document [75.8 KB]
OT3SE USA Single-Ended Low Power Output Xfmr 25K: 4,8 Ohm @25mADC
Technical Details of the OT3SE USA Low Power PP Output Xfmr
OT3SE_USA_DWG_STD.pdf
Adobe Acrobat document [75.4 KB]
OT5PP+ USA Push Pull Low Power Output Xfmr 22K5: 4,8,16 Ohm at 5VA
Technical Details on the OT5PP+ USA Low Power PP Output Xfmr
OT5PP+_USA_DWG_STD.pdf
Adobe Acrobat document [68.3 KB]

OT10SE Family Single Ended OT's (12 WATT)

OT10SE USA STANDARD Single Ended Output Xfmr 5K/7K:4,8,16 Ohms 12VA 60mADC
Technical Details on the OT10SE USA in Open Frame Construction
Visio-OT10SE_STD_DWG.pdf
Adobe Acrobat document [124.5 KB]
OT10SE USA HC87 Single Ended Output Xfmr 5K/7K:4,8,16 Ohm 12VA 60mADC
Technical Details on the OT10SE USA in HC87 End Bells (Low Profile)
Visio-OT10SE_HC87_DWG.pdf
Adobe Acrobat document [158.1 KB]
OT10SE USA VC87 Single Ended Output Xfmr 5K/7K:4,8,16 Ohm 12VA 60mADC
Technical Details on the OT10SE USA in VC87 End Bells (Vertical)
Visio-OT20PP_VC87_DWG_STD.pdf
Adobe Acrobat document [123.9 KB]

OT20SE Family Single Ended OT's (20 WATT)

OT20SE USA STANDARD Single-Ended Output Xfmr 2K3/3K:4,8,16 Ohm 20VA 90mADC
Technical Details on the OT20SE USA in standard channel frame mount
OT20SE_USA_STD_DWG.pdf
Adobe Acrobat document [154.3 KB]
OT20SE USA HC100 Single-Ended Output Xfmr 2K3/3K:4,8,16 Ohm 20VA 90mADC
Technical Details on the OT20SE USA in HC100 end bell
OT20SE_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]
OT20SE USA FM100 Single-Ended Output Xfmr 2K3/3K:4,8,16 Ohm 20VA 90mADC
Technical Details on the OT20SE USA in FM100 Vertical end bell
OT20SE_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]

Other Push-Pull OT's (20 to 22 WATT)

OT12PP USA STANDARD EI75 Push Pull Output Xfmr 8K:4,8,16 Ohm 20VA
Technical Details on the OT12PP USA in Open Frame Construction
OT12PP_USA_DWG_STD.pdf
Adobe Acrobat document [69.1 KB]
OT16PP USA STANDARD EI87 Push Pull Output Xfmr 6K6:8 Ohm 22VA
Technical Details on the OT16PP USA in Open Frame Construction
OT16PP_USA_STD_DWG.pdf
Adobe Acrobat document [208.9 KB]
OT17PP USA STANDARD EI87 Push Pull Output Xfmr 8K:8 Ohm 22VA
Technical Details on the OT17PP USA in Open Frame Construction
OT17PP_USA_STD_DWG.pdf
Adobe Acrobat document [208.3 KB]

OT20PP Family Push-Pull OT's (25 WATT)

OT20PP USA STANDARD Push Pull Output Xfmr 6600/8K:4,8,16 Ohm 22VA
Technical Details on the OT20PP USA in Open Frame Construction
OT20PP_USA_STD_DWG.pdf
Adobe Acrobat document [117.0 KB]
OT20PP USA HC87 Push Pull Output Xfmr 6600/8K:4,8,16 Ohm 22VA
Technical Details on the OT20PP USA in HC87 End Bells (Low Profile)
OT20PP_HC87_DWG_STD.pdf
Adobe Acrobat document [162.2 KB]
OT20PP USA VC87 Push Pull Output Xfmr 6600/8K:4,8,16 Ohm 22VA
Technical Details on the OT20PP USA in VC87 End Bells (Vertical)
Visio-OT20PP_VC87_DWG_STD.pdf
Adobe Acrobat document [123.9 KB]

OT19PP Family Push-Pull OT's (22 WATT) for 18W

OT19PP USA STANDARD Push Pull Output Xfmr 8000:4,8,16 Ohm 22VA oversized "18W"
Technical Details on the OT19PP USA in Open Frame Construction
OT19PP_USA_STD_DWG.pdf
Adobe Acrobat document [157.2 KB]
OT19PP USA HC100 Push Pull Output Xfmr 8000:4,8,16 Ohm 22VA oversized 18W
Technical Details on the OT19PP USA in HC100 Horizontal end bells
OT19PP_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]
OT19PP USA FM100 Push Pull Output Xfmr 8000:4,8,16 Ohm 22VA oversized 18W
Technical Details on the OT19PP USA in FM100 Vertical end bells
OT19PP_USA_HC100_DWG.pdf
Adobe Acrobat document [174.6 KB]

OT22PP Family Push-Pull OT's (30 WATT) 

OT22PP USA HC100 Push Pull Output Xfmr 6600:4,8,16 Ohm 30VA oversized "Deluxe"
Technical Details on the OT22PP USA in HC100 Horizontal end bells
OT22PP_USA_HC100_DWG.pdf
Adobe Acrobat document [176.1 KB]

OT40PP Family Push-Pull OT's (45 WATT) 

OT40PP USA STANDARD Push-Pull Output Xfmr 3K3/4K2:4,8,16 Ohm 45VA
Technical Details on the OT20SE USA Standard in channel frame
OT40PP_USA_STD_DWG.pdf
Adobe Acrobat document [156.6 KB]
OT40PP USA HC100 Push-Pull Output Xfmr 3K3/4K2:4,8,16 Ohm 45VA
Technical Details on the OT40PP USA in Horizontal End Bell
OT40PP_USA_HC100_DWG.pdf
Adobe Acrobat document [169.1 KB]
OT40PP USA FM100 Push-Pull Output Xfmr 3K3/4K2:4,8,16 Ohm 45VA
Technical Details on the OT40PP USA in Vertical End Bell
OT40PP_USA_FM100_DWG.pdf
Adobe Acrobat document [138.6 KB]

Power Transformers

Power Transformers- 0.5 to 5VA Amplifiers EI87 25W

PT190.1 USA 380Vac CT Power Transformer 40mA
Technical Details on the PT190.1 USA Power Xfmr
PT190.1_USA_VC87.pdf
Adobe Acrobat document [94.4 KB]
PT240.1 USA 480Vac CT Power Transformer 40mA
Technical Details on the PT240.1 USA Power Xfmr
PT240.1_USA_VC87.pdf
Adobe Acrobat document [94.3 KB]

Power Transformers- 5 to 20VA Amplifiers EI100 65W

PT190.2 USA 380Vac CT Power Transformer 120mA
Technical Details on the PT190.2 USA Power Xfmr
PT190.2_USA_DWG.pdf
Adobe Acrobat document [112.9 KB]
PT275.2 USA 550Vac CT Power Transformer 100mA
Technical Details on the PT275.2 & PT275.2i USA Power Xfmrs
PT275.2_USA_DWG.pdf
Adobe Acrobat document [112.9 KB]
PT290.2 USA 580Vac CT Power Transformer 90mA (120Vac Mains)
Technical Details on the PT290.2 USA
PT290_2_FM100_DWG.pdf
Adobe Acrobat document [100.3 KB]
PT290.2i USA 580Vac CT Power Transformer 90mA (220/240V Mains)
Technical Details on the PT290.2i USA
PT290.2i_USA_DWG.pdf
Adobe Acrobat document [112.1 KB]

  Power Transformers- 18 to 30VA Amplifiers EI112 85W

PT285M USA 570Vac CT Power Transformer 150mA
Technical Details on the PT285M USA
PT285M_B_DWG.pdf
Adobe Acrobat document [55.4 KB]
PT330M USA 660Vac CT Power Transformer 140mA
Technical Details on the PT330M USA
PT330M_REVD_DWG.pdf
Adobe Acrobat document [55.6 KB]

MPS Product Offering Overview