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Posts by bluemonkeyflyer

I finished my Kameleon v2 Desktop Amp and Power Supply. I also built the "No Filter" Gain Module and the Sennhesier HD-650 Filter Module. The sound quality with the HD-650 filter is better than stock: deeper sub-bass, flattens the slight mid-bass hump, and delivers more details. I'm going to build filter modules for each of my headphones following Frans' guides. They are surface mount "SMDs" but they're "huge" 1206 packages and easy to solder in place. Each one takes about...
I have the amp, gain board, and power supply almost finished. To avoid EMI, I installed the amp and power supply in separate Hammond enclosures per Frans' excellent and detailed build guide. I used digital calipers, multiple drill bits, and a step drill bit for making precise round holes that perfectly align with the TRS, Mute switch, Vol Pot, Neon Power Switch, RCAs, and DIN connectors. I have a Dremel Moto bench-mounted saw inbound from Amazon I hope will make tooling...
The QRV-08 is very challenging. It has 300 SMD components and somewhere around 900 solder joints. It's sometimes difficult to determine the part labels printed on the PCB requiring a careful study of the schematic and circuit traces layout. The SMDs are mostly 0805 caps/resistors (2.0 x 1.25mm) and SOT23 transistors (2.8 x 1.5mm). IIRC, the ICs have a pitch of ~ 0.75 and there are 14 of those. Having said all that, with experience/practice, a few simple techniques, and the...
@Armaegis,   I don't think I can add anything substantive to your excellent review and description of HP-1. I liked HP-1 a lot during my brief audition. It's very clean with balanced FR, good punch, smooth mids, good treble extension/air/details, and wide soundstage.   I compared HP-1 to several amps including my QRV-08. I like both very much. Despite measurement differences posted by Tom, I could not hear any difference in sound quality. I used SPL matching, an...
Just completed and tested...sounds great!           Here are my first two:      
Reserved
'solderdude' has designed numerous DIY amps, power supplies, and much more...all free to the DIY community. He's also the designer of garage1217 tube amps and power supplies. He runs a very informative site HERE with tons of DIY information, guides, tutorials, and a blog about amps and headphones. All DIY'ers should check it out! His build guides, with photos and instructions are peerless and he's very responsive to newbie questions.   I'm currently building solderdude's...
OK. I have what you need. PM me.
Neurochrome HP-1 arrived today. I'm looking forward to taking it for a test drive.  
 Are you sure about the screw? Do you need the Front Hanger Holder Ref No. 8... or Connector B Ref No 5? The Front Hanger Holder Ref No. 8 needs the screw with Ref No. 20. The Screw with Ref No. 21 secures Connector B, Ref No. 5. 
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