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GrubDAC in use
By simplethings
Feb 22, 2012
AC side of the power supply is wired. This build doesn't use all the transformer's tabs, but I still kept them just in case I want to re-use this transformer in another project. The blue wires are a 6v secondary, isolated from the main secondary, that I will probably use to power LEDs in the tube sockets.
By KimLaroux
Jun 15, 2012
My freshly finished SSMH on it's first test drive. View of the interior. The output coupling capacitors are Elna Silmic II. The inter-stage coupling capacitors are Mundorf M-CAP MKP Series.
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By KimLaroux
Jun 17, 2012
My freshly finished SSMH on it's first test drive. View of the interior. The output coupling capacitors are Elna Silmic II. The inter-stage coupling capacitors are Mundorf M-CAP MKP Series.
By KimLaroux
Jun 17, 2012
My freshly finished SSMH on it's first test drive. The pot, knob and output jack were salvaged from a vintage stereo. There's bad scratching sound from the pot, I'll have to find a better one.
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By KimLaroux
Jun 17, 2012
My freshly finished SSMH on it's first test drive. The tubes are 12AX7.
By KimLaroux
Jun 17, 2012
15 Amps power switch with GFCI plug and breaker. Used to turn off all the electronics in my room. DIY
By KimLaroux
May 22, 2012
My desk, showing my soldering station. Also shown is the custom headphone stands I made. These are wardrobe pole hangers cut at 90 degrees from the base with a piece of plastic taped on top.
By KimLaroux
Apr 18, 2012
My soldering iron with new tips.
By KimLaroux
Jun 11, 2012
My butane powered tools. A piezoelectric started torch, and a soldering iron.
By KimLaroux
Jun 11, 2012
Mini-DIN to RCA cable. Used as an adapter / cable to plug a DAC with SPDIF trough the S-video mini-DIN on Dell laptops.
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By KimLaroux
Apr 26, 2012
Schematic of the first version of the power supply I designed for this amplifier.
By KimLaroux
Jun 20, 2012
Linear regulated power supply for my MSSH. Revision 0.2.
By KimLaroux
Jun 21, 2012
First series of tweaks to my MSSH. Connected the 0V rail to earth with a 100Ω resistor. This eliminated the noise picked from the floating inputs. Doubled the value of R13 hoping to lower the back ground noise, it didn't change anything. Added an identical resistor in parallel with the one in the CRC filter, because the original 7Ω dropped too many volts and overheated. I thought it would make the noise louder, but it didn't. Connected the volume pot's metal casing to ground. This eliminated the static noise when touching the pot.
By KimLaroux
Jun 21, 2012
Exploded view of my Starving Student. Everything is painted and ready for final assembly.
By KimLaroux
Aug 9, 2012
Hammond 1455 enclosure machined by hand.
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By KimLaroux
Jul 30, 2012
Placing the amplifier on a grounded metal pan muted the hum.
By KimLaroux
Jul 7, 2012
Line in is wired using braided solid core copper. Physical power rails using 18 AWG solid copper. The 4 power decoupling capacitors are Nichicon ES MUSE.
By KimLaroux
Jun 16, 2012
Line in is wired using braided solid core copper. Physical power rails using 18 AWG solid copper. The 4 power decoupling capacitors are Nichicon ES MUSE.
By KimLaroux
Jun 17, 2012
Final modification applied to the headband of my SRH440. I trimmed the pleather from the stock abomination they called a headband, and stitched it to the ledges of the HD650 headband cushion. The earpads are SRH940's pads.
By KimLaroux
Jul 28, 2012
Finished assembling the power supply in the new enclosure. Since the case is shorter than the clear plastic one I had, the original layout did not fit. I rebuilt the power supply from the ground up. I placed the capacitors so they shield AC from the rest of the circuit.
By KimLaroux
Aug 11, 2012
Finished reassembling the wiring for the tubes and the MOSFETs. This time the original layout was recycled. I also installed the back panel and some shields.
By KimLaroux
Aug 11, 2012
My Millett "Starving Student" Hybrid, complete and working circuit. I designed a 48v linear regulated power supply for this amplifier, it consists of everything right of the tube sockets.
By KimLaroux
Aug 19, 2012
My Millett "Starving Student" Hybrid, complete and working circuit. I designed a 48v linear regulated power supply for this amplifier, it consists of everything behind the tube sockets.
By KimLaroux
Aug 19, 2012
My Millett "Starving Student" Hybrid headphone amplifier. The whole circuit was built using Point to Point wiring. I designed and built a 48v linear regulated power supply for the amplifier. The transformer and the cubic heat sink beside it are part of the PSU. I built Faraday cages around the tubes, to shield them from all the EMI from today's technologies, more precisely WiFi.
By KimLaroux
Aug 19, 2012
My Millett "Starving Student" Hybrid headphone amplifier. The whole circuit was built using Point to Point wiring. I designed and built a 48v linear regulated power supply for the amplifier. The transformer and the cubic heat sink beside it are part of the PSU. I built Faraday cages around the tubes, to shield them from all the EMI from today's technologies, more precisely WiFi.
By KimLaroux
Aug 19, 2012
My Millett "Starving Student" Hybrid headphone amplifier, sitting atop the Audio-gd NFB-12. The enclosure I used for my MSSH is almost the same size as the NFB-12. It's the Hammond 1455T2201. I installed orange LEDs inside the tube sockets, but I used low intensity LEDs so they are useless. The tube's heaters are actually more luminescent.
By KimLaroux
Aug 19, 2012
After - Mini female to 1/4" male stereo adapter
By jazzfan
Aug 28, 2012
Cardas RCA Interconnects
By jazzfan
Aug 28, 2012
Before - Furutech 1/4" stereo phone plug
By jazzfan
Aug 28, 2012
Furutech BNC Interconnects
By jazzfan
Aug 28, 2012
Audez'e LCD-2 (with modded headband) See post #408 in The Audeze LCD-2 Ortho thread (New) - http://tinyurl.com/6odbcmg
By jazzfan
Aug 28, 2012
By KimLaroux
Nov 29, 2012
My soldering corner. Just recently bought a fake Hakko 936 soldering station, thinking it was genuine.
By KimLaroux
Dec 22, 2012
My setup in December 2012.
By KimLaroux
Dec 22, 2012
Debugging session in December 2012. There was dirt in a tube socket, which allowed arcing between pins.
By KimLaroux
Dec 27, 2012
For the first time in half a year since I began this project, I am listening to music trough the MSSH and actually enjoying it. The noise level is now low enough to be forgotten even with my most sensitive headphones. I concluded the MSSH and the NFB-12 hate each others, and they will only be happy if kept apart. This is why I have the MSSH on another shelf instead of stacking it on top the DAC.
By KimLaroux
Dec 27, 2012
Latest modification to my set. See the 3 holes inside the white donut? Stock there's a single one. I added 2 more. This extended the low end response. There's now more deep bass, but it didn't raise the overall bass volume. The balance is just right. It also widened and deepened the soundstage - somehow. They sound more like speakers now, which is to say they are less fatiguing.
By KimLaroux
Mar 9, 2013
my own DIY power cable
By Tamz
Mar 17, 2013
my own DIY power cable
By Tamz
Mar 17, 2013
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