DIY Audio Projects Photo Gallery
 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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Mill_2.JPG
Mill_2.JPGRear View of the DIY OTL Tube Amps 5139 viewsThe chassis of my amps were machined in this German Milling machine - a real beast . It had to be repaired at a few stages just to complete the build. You can see the torodials that are used for the Driver stage ( smallest ) ..The Heaters ( next largest 6.3vac @ 32A ) and the Output Power supply ( the largest toroid - 1KVA @ 100 VAC )
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DIY-Granite-Speakers.jpgDIY Granite Speakers5106 viewsThese are granite speakers that Radoslav from Slovakia has put together. The bookshelf sized loudspeaker uses the Seas G17REX/P woofer and Seas 27 TFFC tweeter with a 2nd order XO at 2500 Hz.

For full details, see the DIY Seas Granite Speaker project page.
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SV100870.JPGOP Amp Preamp - from the rear5083 viewsFrom the rear of the case you can see the power connection (for 18V 1.2A regulated wall wart) gold output and input connections. More information for this diy audio project is available at the DIY OPA2134 Preamp Project page.
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IMGP2958~0.JPGLME49810 with ThermalTrak NJL3281D/1302D output devices5026 viewsThis is a chip amplifier (chipamp) based on the National Semiconductor LME49810 high-performance, high fidelity audio power amplifier driver chip. The output stage is a conventional emitter following using ThermalTrak to achieve good thermal tracking.
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AMPBOTOM.jpgS5 Electronics K-12M Tube Amp Kit - underside4985 viewsUnderside view of top plate. This tube amp is built from an S-5 Electronics K-12 Tube Amplifier Kit.
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Nigel-K-12G-Tube-Amplifier-Kit-Build~1.jpgK-12G Tube Amplifier Kit Build4985 viewsNigel's build of a K-12G Tube Amplifier Kit.

For full details of Nigel's build, see his K-12G Tube Amp Kit Build thread.
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DSCF0797-C.JPGDIY-GENE Mark Levinson Clone 60Watt Class A Amplifier4983 viewsFor those that are less willing to create their own cases. Here is a completed DIY-GENE Mark Levinson Clone 60Watt / Ch Dual Mono Amplifier. It is hernia inducing weighing in at nearly 50Kg. The kit comes with most of the amplifier electronics built and tested and with all the casing components. All you need to do is to build the PSUs and put it all together. This example has 2 x 65-0-65V at 10A each. It runs very HOT as you would expect a high output Class A amplifier to run. Great care must be taken to mount the 12 x Output Transistors correctly, a small mistake cost me over £60.00 in burnt components. Note the Capacitor connections and the extremely BEEFY PSU.

Built by Andy Freestone
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K-12G-Tube-Amp-Kit-Wine-Box.jpgK-12G Tube Amp Kit in a Wine Box4961 viewsA K-12G Tube Amplifier Kit built into a wooden wine box.

Thread: K12G In A Wine Box ..
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DSCF0800-C.JPGDIY-GENE Mark Levinson Clone 60Watt Class A Amplifier4944 viewsFor those that are less willing to create their own cases. Here is a completed DIY-GENE Mark Levinson Clone 60Watt / Ch Dual Mono Amplifier. It is hernia inducing weighing in at nearly 50Kg. The kit comes with most of the amplifier electronics built and tested and with all the casing components. All you need to do is to build the PSUs and put it all together. This example has 2 x 65-0-65V at 10A each. It runs very HOT as you would expect a high output Class A amplifier to run. Great care must be taken to mount the 12 x Output Transistors correctly, a small mistake cost me over £60.00 in burnt components. Note the Capacitor connections and the extremely BEEFY PSU.

Built by Andy Freestone
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2nd_monoblock.JPGUnderbelly shot of the DIY OTL Tube monoblock4931 viewsStrangely enough , the second was made intentionally Mirror Image , but I had neglected the fact that the Toroids had the same winding tail positions , so the build wasn't perfectly mirror image after all . This actually was a bit of a headache , since the first was more ideally layed out in electrical design & visual eye candy
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DSCN0746.JPGK-16LS Customized Tube Amplifier Kit4921 viewsAdded silicone dampers to the tubes and upgraded the lamp-switch power cord to an IEC jack.
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12AX7-Tube-Preamp-Kit.jpgDIY 12AX7 Tube Preamplifier Kit4879 viewsThis is my build of the Silicon Chip Magazine 12AX7 DIY Tube Preamplifier Kit. All of the coupling capacitors were upgraded to Auricaps. The volume control is an ALPS pot from Radio Shack
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Finished-LM3875-Gainclone.jpgFinished LM3875 Gainclone Enclosure4862 viewsThe finished enclosure for my LM3875 Gainclone. The enclosure is from Jaycar and was $15. See the other pictures for more info.
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EL84-Single-Ended-Tube-Amp.jpgTesting a DIY SE EL84 Tube Amp4848 viewsHere I am testing the Single Ended EL84 Stereo Amplifier. The whole AMP fits on a 100 by 160 mm DIY PCB. A double triode ECC88 / 6DJ8 or ECC82 tube is used to amplify the input signal. See other photo for the finished amplifier and more details.
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DIY-5687-Tube-Preamplifier.jpgDIY 5687 Tube Preamplifier4822 viewsThis is my first DIY 5687 tube preamplifier. Sounds great for such a simple preamp. Front view.
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K-16LS-Tube-Amplifier-Kit-Modifications.jpgK-16LS Tube Amplifier Kit with Modifications4810 viewsHere are a couple of photos of Andy's K-16LS Tube Amplifier Kit. The enclosure is a Hammond 16" x 8" x 3" aluminum chassis. The original audio output transformers are 5K6 OPT's from an ELLA amplifier. For more information about Andy's build and modifications, see his webpage.

More information about these kits is available at the S-5 Electronics Tube Amp Kit page.
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Velleman-DIY-Audio-Kits.jpgTwo inexpensive Velleman kits4806 viewsA preamp & amplifier kit that I'm going to combine to make a small integrated amp.
The preamp has volume and separate bass & treble controls.
The amplifier uses a TDA1521 IC.
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Finished-AMP6-T-Amp-Back.jpgRear View - DIY Class-T (T-Amp) Kit4761 viewsHere is a rear view of the DIY AMP6 T-Amp kit.
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PradaInsideBack.jpgPrada OPA627 Preamplifier - inside4733 viewsI was inspired to build this preamp by learning of the Burr-Brown OPA627 (very high performance OP amp) and access to my daughter's Prada phone, heavy cardboard, container. The preamplifier modules are constructed on vero proto boards. Only component wire was used here. The input caps are Cornell Dubilier (white) and Solen (black) was used for the output). Metal film resistors, all pure silver hookup wire, gold RCAs jack and WBT silver solder make this a quality build. The box is lined with bitumanised aluminum foil and an Alps Blue Velvet attenuator and 4oz solid brass black knob add to this build. Four 9V lithium batteries (1200Ah each) drive the unit.
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IMG_3232.JPGK-12G tube amplifier kit build4729 viewsPhoto of a S-5 Electronics K-12G tube amplifier kit which has been built into an old Kenwood solid state amplifier case.
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