How to buy
Please visit my webshop at SJOSTROMAUDIO.NET
Most items are unpopulated printed circuit boards but the pictures show the finished product. As a service I can offer a built unit for some products.
Postage & packing:
The shipping costs is visible in the shopping cart and during the checkout process.
Payment:
I'm using Paypal with possibility to use credit cards without having an account at Paypal.
| QRP01, Gainclone |
Professional pcb
Only the bare pcb, no additional parts are included except for 1.5 mm wire for the inductor. Weight 74 (+ inductor 20 g). |
NO PCB LEFT but pcb's could be ordered. |
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| QRP02, Gainclone |
Professional pcb
Only the bare pcb, no additional parts are included except for 1.5 mm wire for the inductor. Weight 40 g (+ inductor 10 g). |
No PCB LEFT but more could be ordered. |  |
| PA03 Power amp, design by Pavel Ducek |
Professional pcb
Only the bare pcb, no additional parts included. |
No PCB LEFT but more could be ordered. |
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| QSXPS Rev.1, power supply |
Professional pcb
Only the bare pcb, no additional parts are included. Weight 77 g. The design is discontinued and replaced by SSR03 |
NO PCB LEFT |
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| QSXPS Rev. 0, power supply |
Professional pcb
Only the bare pcb, no additional parts are included. Weight 58 g. The design is discontinued and replaced by SSR03 |
NO PCB LEFT |  |
| SSR01, power supply |
Professional pcb
Only the bare pcb, no additional parts are included. The PCB has four layers, 70 um thick and with goldplated pads, made in a small series. Weight 10 g. |
Go to webshop |  |
| SSR01, power supply |
Professional pcb + AD825
Pcb and AD825 no extra charge if you want it soldered. Weight 10 g. |
Go to webshop | |
| SSR01, power supply |
Ready made unit
Ready made unit with D44H11, AD825, LM431 or precision reference LM329, voltage out 5-24 volt. Other voltages on request. Weight 21 g. |
Go to webshop |
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| SSR02, power supply | Professional pcb
Only the bare pcb, no additional parts are included. The PCB has four layers, 70 um thick and with goldplated pads, made in a small series. Weight 10 g. |
Go to webshop |  |
| SSR02, power supply |
Professional pcb + AD825
Pcb and AD825 no extra charge if you want it soldered. Weight 10 g. |
Go to webshop | |
| SSR02, power supply |
Ready made unit
Ready made unit with D44H11, AD825, LM431 or precision reference LM329, voltage out 5-24 volt. Other voltages on request. Weight 21 g. |
Go to webshop | |
| JSR01, power supply |
Professional pcb
Only the bare pcb, no additional parts are included. Weight 14 g. |
NO PCB LEFT
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| JSR02, power supply |
Professional pcb
Only the bare pcb, no additional parts are included. Weight 5 g. |
NO PCB LEFT
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| JSR03, power supply |
Professional pcb
Only the bare pcb, no additional parts are included. Weight 8 g. |
No pcb's available, discontinued. See the SSR01 instead.
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| JSR03, power supply |
Professional pcb + AD825
Pcb and AD825 no extra charge if you want it soldered. Weight 9 g. |
No pcb's available, discontinued. See the SSR01 instead.
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| JSR03, power supply |
Ready made unit
Ready made unit with D44H11, AD825, precision reference LM329, voltage out 13.6-13.8 volt. Other voltages on request. Weight 20 g. |
No pcb's available, discontinued. See the SSR01 instead.
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| JSR04, power supply | Professional pcb
Only the bare pcb, no additional parts are included. Weight 94 g. |
No pcb's available, discontinued. See the SSR03 instead. |  |
| JSR04, power supply | Professional pcb + AD825
Pcb and AD825, no extra charge if you want them soldered. Weight 95 g. |
No pcb's available, discontinued. See the SSR03 instead. | |
| JSR04, power supply | Ready made unit
Ready made unit with BD139/140, AD825, precision reference LM431, voltage out +-14.8 volt. Other voltages on request. Weight 314 g. |
No pcb's available, discontinued. See the SSR03 instead. | |
| SSR03, dual super regulated power supply | Professional pcb
Only the bare pcb, no additional parts are included. Weight 98 g. |
Go to webshop |  |
| SSR03, dual super regulated power supply | Professional pcb + AD825
Pcb and AD825, no extra charge if you want them soldered. Weight 99 g. |
Go to webshop | |
| SSR03, dual super regulated power supply | Ready made unit
Ready made unit with AD825, precision reference LM431, voltage out +-15.0 volt. Other voltages on request. Weight 383 g. |
Go to webshop | |
| JSR05, power supply, negative voltage | Professional pcb
Only the bare pcb, no additional parts are included. Weight 8 g. |
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| JSR05, power supply, negative voltage | Professional pcb + AD825
Pcb and AD825 no extra charge if you want it soldered. Weight 9 g. |
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| JSR05, power supply, negative voltage |
Ready made unit
Ready made unit with D45H11, AD825, precision reference LM329, voltage out -13.6-13.8 volt. Other voltages on request. Weight 20 g. |
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| JSR06, dual power supply | Professional pcb
Only the bare pcb, no additional parts are included. Weight 47 g. |
No pcb's available, discontinued. See the SSR04 instead. |
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| JSR06, dual power supply | Professional pcb + AD825
Pcb and AD825. No extra charge if you want them soldered. Weight 47 g. |
No pcb's available, discontinued. See the SSR04 instead. | |
| QSXM2, phono amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 128 g. |
Go to webshop |  |
| QSXM3, phono amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 124 g. |
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| QRV01, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 168 g. |
Go to webshop |  |
| QRV02, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 78 g. |
No pcb's available, discontinued. See the QRV03 instead. |  |
| QRV03, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 76 g |
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| QRV04, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 32 g. |
No pcb's available, discontinued. See the QRV09 instead. |  |
| QRV05, diamond buffer | Professional pcb
Only a single channel, two for stereo are needed. Only the bare pcb, no additional parts are included. Weight 5 g. 4 pcs. 28 g |
No pcb's available, discontinued. See the SSB01 instead. |  |
| SSB01, diamond buffer | Professional pcb
Only a single channel, two for stereo are needed. Only the bare pcb, no additional parts are included. Weight 3 g. 4 pcs. 11 g |
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| SSB01, diamond buffer |
Ready made unit Only a single channel, two for stereo are needed. Built unit, hand soldered. Weight 5 g. |
Go to webshop |  |
| SSB02, diamond buffer | Professional pcb
Only the bare pcb, no additional parts are included. Weight 5.9 g. |
Go to webshop |  |
| SSB02, diamond buffer |
Ready made unit Only a single channel, two for stereo are needed. Built unit. Weight 7.3 g. |
Go to webshop |  |
| UBC01, unbalanced to balanced driver | Professional pcb
Only the bare pcb, no additional parts are included. Weight 18 g. |
Go to webshop |  |
| QRV06, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 13 g. |
No pcb's available, discontinued. See the QRV08 instead.
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| QRV07, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 38 g. |
No pcb's available, discontinued. See the QRV09 instead |  |
| QRV08, headphone amp | Professional pcb
Only the bare pcb, no additional parts are included. Weight 88 g. |
Go to webshop |  |
| QRV09, headphone amp |
Professional pcb Only the bare pcb, no additional parts are included. Weight 55 g.
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Go to webshop |  |
| DCT01, DC trap | Professional pcb
Only the bare pcb, no additional parts are included. Weight 23 g. |
No pcb's available, discontinued. See the DCT02 instead |
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| DCT02, DC trap | Professional pcb
Only the bare pcb, no additional parts are included. Weight 23 g. |
Go to webshop |  |
| DCT02, DC trap | Ready made unit
Soldered pcb. Weight 109 g. |
Go to webshop | |
| DCT03, DC trap | Professional pcb
Only the bare pcb, no additional parts are included. Weight 52 g. |
Go to webshop |  |
| DCT03, DC trap | Ready made unit
Soldered pcb. Weight 510 g. |
Go to webshop |  |
| SPS01, Power supply | Professional pcb
Only the bare pcb, no additional parts are included. Board 2 mm, 70 um copper, goldpads. Weight 180 g. |
Go to webshop |  |
| SPS02, Power supply | Professional pcb
Only the bare pcb, no additional parts are included. Weight 34 g. |
Go to webshop |  |
| SPS02, Power supply | Ready made unit
Soldered pcb. Weight 306 g. |
Go to webshop | |
| SST01, soft start | Professional pcb
Only the bare pcb, no additional parts are included. Weight 25 g. |
No pcb's available, discontinued. See the SST03 instead |  |
| SST02, soft start | Professional pcb
Only the bare pcb, no additional parts are included. Weight 23 g. |
No pcb's available, discontinued. See the SST03 instead |  |
| SST03, soft start | Professional pcb
Only the bare pcb, no additional parts are included. Weight 23 g. |
Go to webshop | |
| MLD-01, Mains LED Driver | Professional pcb
Only the bare pcb, no additional parts are included. Weight 10 g. |
No pcb's available. | |
| RFB01, rectifier bridge | Professional pcb
Only the bare pcb, no additional parts are included. Weight 22 g. |
No pcb's available, discontinued but replaced by RFB03
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| RFB02, rectifier bridge | Professional pcb
Only the bare pcb, no additional parts are included. Weight 19 g. 4 pcs. 86 g |
No pcb's available, discontinued but replaced by RFB03 |  |
| RFB03, rectifier bridge | Professional pcb
Only the bare pcb, no additional parts are included. Weight 19 g. 4 pcs. 78 g |
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