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.

DIY Audio Projects Photo Gallery

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Category Albums Files
DIY Audio ProjectsShow off your Do It Yourself (DIY) Audio Projects.
8 610
Vacuum Tube (Valve) Audio Projects


DIY Vacuum Tube (valve) Projects such as Tube Amplifiers and Tube Preamplifiers.

231 files, last one added on Nov 19, 2015
Album viewed 20 times

Speaker and Subwoofer Projects


A photo gallery to show off your DIY Loudspeaker and Subwoofer projects and kits.

135 files, last one added on Sep 25, 2014
Album viewed 22 times

Chipamp, Gainclone, T-Amp and Op-amp Projects


DIY audio projects that are based around a single integrated semiconductor chip or an opamp like Gainclone, Chipamp or T-Amp projects.

74 files, last one added on Dec 15, 2014
Album viewed 11 times

Solid State Audio Projects


DIY Audio Projects that are based around discrete (solid state) components, such as transistors, MOSFETS, J-FETS ...

56 files, last one added on Jul 04, 2013
Album viewed 11 times

Audio Cable Projects


DIY Audio Cable Projects - Interconnect (RCA) Cables, Speaker Cables and Power (mains) Cables.

11 files, last one added on May 19, 2009
Album viewed 5 times

Other DIY Audio Projects


Photographs of DIY Audio Projects that do not fall into any of the previous categories such as DIY turntables, power supplies, pictures of your listening room setup ....

19 files, last one added on Jun 16, 2013
Album viewed 15 times

S-5 Electronics Tube Amplifier Kits


A photo gallery of the various inexpensive Tube Amplifier Kits from S-5 Electronics that have been built by DIYers. The kits include the K-8LS, K-12, K-16 and the similar K-502.

51 files, last one added on Sep 03, 2013
Album viewed 11 times

Commercial Hi-Fi Audio


Photos of Commercial Hi-Fi Audio Gear, Components and Products.

33 files, last one added on May 15, 2012
Album viewed 5 times

8 albums on 1 page(s)

610 files in 8 albums and 1 categories with 5 comments viewed 2,619,405 times

Random files
6SN7-6L6-Tube-Amp-3.jpg6SN7 / 6L6 Tube Amp6304 viewsWilliamson front end and phase splitter, with ultralinear output stage. 6SN7, followed by another 6SN7 driving a pair of 6L6.

Tube Amp Schematics: Williamson 6SN7 - 6L6 (KT66) Tube Amplifier
PradaInsideBack.jpgPrada OPA627 Preamplifier - inside4096 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.
RFTUBES.jpgRF tubes in audio use1643 viewsThe use of RF tubes in audio amplifiers may be a good option and saves some money. Here you have the descriptions of some experiments done in this field. For details see
6EM7_Single_Ended_Triode_Amplifier.jpg“Paris” – 6EM7 Dual Mono Integrated Amplifier1670 viewsWhat started as a forum thread discussion (6EM7 power amp) ended in the construction of a 6EM7 (Sylvania tube) integrated triode amplifier. I used dual mono construction with two power transformers, two 5Y3 rectifier tubes and two separate power filter stages but with a shared single stage preamp. There is a single EMI/RFI power filter feeding both power supplies. Two chokes and two 15W Edcor audio output transformers are in the base of the enclosure. An Alps blue velvet pot after the preamp stage (4S Universal) controls volume to the power amp section. The colour is Sungold and the base Mirbue. The amp has a very detailed mid-range and produces about 2W.

Mark - retro-thermionic

Last additions
Decware-inspired-EL84-amp.jpgDecware inspired EL84 amp with attenuation19 viewsThis is a Decware inspired EL84 power amp with attenuation. My twist was to make a it a EL84 SE UL (not triode). Also I upgraded the PS a little. One PS tweak was to use a Russian PIO 4uf cap as the first cap in the PS. Also the larger electros are all snubbed.

The inter-stage caps are Audio Note Tin foil, mylar and oil. The amp I called "Tamarisk" - just like how it sounds. The finished amp looks good and not too heavy. Sound is a big step up from my already great sounding 6V6 - Ozzie tube SE UL amp. On live classical every part of the music has a layer. There every instrument is heard in its own layer and decay, reveb etc also have their own layers.

Mark Houston – retro-thermionic

Forum Thread:
Nov 19, 2015
6EM7-Single-Ended-Triode-Amp.jpg6EM7 Single-Ended Triode (SET) Amplifier156 views"This amplifier is based on a tube intended to drive the vertical deflection circuits in larger televisions, the 6EM7. It has two dissimilar triodes in one envelope. One is a high gain, low power unit intended as an amplifier or oscillator, and the other is a higher power unit intended to drive the magnetic deflection coils on the back of a CRT. At audio frequencies the combination is just what we need to build a nice little audio amplifier. One tube per channel. And there are many thousands of these tubes and tubes like them readily available today."

Matt Renaud
Pacific Northwest, USA

Project Page:

Forum Thread:

Jun 29, 2015
6CY7-Stereo-Amplifier.jpg6CY7 Stereo Amplifier208 views"This is a nice little low power stereo amp (1.3W/channel) based on the 6CY7 tube. The amp uses a Hammond power transformer and chokes and a pair of Edcor XSE10-8-5K output transformers. I have to say that it sounds really nice. There is just something about triode SE amps that nothing can beat. The peak clean power output is 1.3 watts RMS per channel (as determined from watching an oscilloscope). The 3dB frequency response is ≈48 Hz to 30 KHz."

Matt Renaud
Pacific Northwest, USA
Project Thread:

Jun 22, 2015
Class-D-SureElectronics-Amp.jpgClass-D Sure-Electronics Amplifier511 viewsThis is my first DIY Class-D amplifier. The amp is based on a $30 Sure-electronics module. The amplifier modules requires only a 30VDC high current power supply because into 4 ohm it can produce 100Wpc. The enclosure is an off the shelf 2U 19” rack mount type. The power supply has an 18-0-18V, 9A toroidal transformer. A 10A rec bridge, some snubbing caps and 30,000 uF of stage caps make up the power supply. Two selectable inputs provide direct connection to the amp module or connection via an Alp pot and 4 Oz brass knob. Very crisp sounding with good detail... See the forum thread Class D 100W power amp for more information.

Mark Houston – retro-thermionic
Dec 15, 2014

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