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Posts by mwhouston

A Kiwi friend of mine spends a lot of time on a plane. He has some expensive ear buds but found the plane's system really didn't drive them well. He asked me to make a small and light HP amp and this is the result. The enclosure is two tone ABS. I have lined it with bitumanised heavy Al foil and construction is on a prototype brd. All silver soldered and solid core copper wire for hookup.   Sounds excellent and drives my 32ohm AT Air 700s and Beyerdynamic 770 at 250ohms....
God! That's good.
Looks like a good start.
Highflying: You have me thinking.
Highflying: I developed a similar finish using a high quality house paint, a semi-dry roller and secretly, now well known, technique. Take look at my DIY, retro-thermionic blog spot (Google it).
Take a look at my genuine America Oak wood knobs on my Audio Bastard blog.
  Here I posted my 2N3055 headphone amp (Woody Pro) and said how much I enjoined it. I was forced to use it because I sold my Tubed HP amp. I bought some Beyerdynamics DT770s (250ohm) but found Woody Pro wouldn't drive it quite loud enough being an emitter follower. So I added my new Tube and Pass B1 preamp "Parley" in front of Woody. The additional gain of Parley and the nice tube warmth created a great synergy and had the 770s pumping.    I used a single stage...
Look sweet.
Very smart looking build.
Oatley Electronics Australia, who is famous for the portable triode headphone (HP) amp, the K272C (latest iteration), has been working hard to produce a truly new and revolutionary home based HP amp. This time they are going out on a limb and have designed a unique and powerful output stage. It works in Class A and uses two small power Fets to drive the phones in a push-pull fashion. Both power devices are on at all times and the back-end has a tight grip on your...
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