Photos of Commercial Hi-Fi Audio Gear, Components and Products.
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LM3875-Gainclone-Chip-Amp-I.JPGLM3875 Gainclone Raosting Pan / Chip Amplifier4001 viewsThis is my first LM3875 Gainclone / Chip Amp. It was constructed following some of the notes from this LM3875 Gainclone / Chip Amp in a Roasting Pan. The volume control (potentiometer) is an ALPS Black Beauty. All soldering was done using silver solder. The bridge rectifier and capacitors are all snubbed with small, but good quality capacitors.
IMG_2678.JPG50EH5 / 25EH5 Tube Ampr with 12AU7 Mini Tube Preamp2368 viewsYet another picture of the 50EH5 Tube amp in action along side with the Mini 12AU7 tube preamp.
K281FrontS.jpgOatley Electronics sub-mini tube/chip amp hybrid K2812674 viewsAn image of the front panel of the Oatley Electronics of Australia tube and chip hybrid power amp. You can see the UV leds which indicate when the amp modules are powered. The amp comprises two K281 kits and is dual mono construction.
After extensive listening I am convinced this is a very good combination of tubes and chip in one integrated power amp. Sound stage in deep with each performer or instrument have their own space on that stage. Holographic.
Push-Pull__Amplifier_6L6_Tube_Glow.jpgTube Glow - Push-Pull 6L6 Tube Amplifier1851 viewsThe glowing tubes of my 6L6 amplifier. The large tubes are the 6L6 output tubes and the smaller tubes are the 12AX7 driver tubes. The bright tube in the middle is an EM80. See the other photos of my 6L6 amp.
Panagiotis Gavriil (Greece)
See the DIY Audio Schematics page for more 6L6 amplifier schematics.
4-channel-400W-amplifier.jpg 4 channel, 400 W amplifier395 viewsThis 4-channel 400 W amplifier uses Hypex UcD400HG modules together with the corresponding power supply.
The whole is mounted inside a Galaxy 330 x 230 x 80 case.
For building instructions, have a look at this project's wiki.
Two such amplifiers has been working for over 2 years in my lounge, driving Linn Komponent 110 loudspeakers which each have 4 speaker inputs.
Francois Corthay - Switzerland
Project Page: 4 channel 400 W amplifier using Hypex UcD400HG modules Dec 20, 2015
E88CC-SV83-SET-Amplifiers.jpgDual SV83 SET Amplifiers371 viewsA mirrored pair of SET amplifiers, presently being used in bridged mode. All P2P construction using silver solder. I included a "Hazen grid" capacitor and input tube bias change switch. The single mA meter displays individual output tube bias current with a Left/Right switch. Edcor XPRW178 power transformer and GXSE10-6-8K output transformers. Upgraded caps to Jantzen Audio 1200V Z-Superior. Upgraded resistors to PRP PR9372 Audio for metal film and TAKMAN REX for carbon film. ALPS Blue 100K attenuator. The power supply uses a RCA 5U4GB rectifier and Hammond 156R choke. Matched pairs of Svetlana SV83 for power and JJ E88CC for the input tube.
Billy Whiten - Georgia, USADec 20, 2015
6V6-Push-Pull-Amplifier.jpgPush-Pull (PP) 6V6GT Tube Amplifier345 viewsThis 6V6 amp was built following the DIY Push-Pull (PP) 6V6 / 6V6GT Tube Amplifier Schematic. Power Supply transformer and Output transformers are handmade in Argentina by NavasBaccino. I'd like to thank Brad S. for the help. The sound is amazing and clear, free of distortion.
Gabriel Rofrano, ARGENTINA
Dec 20, 2015
Decware-inspired-EL84-amp.jpgDecware inspired EL84 amp with attenuation371 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: http://diyaudioprojects.com/Forum/viewtopic.php?f=9&t=5385 Nov 19, 2015