How about MG-Head-S . I had start to build a very low cost Solid state Headphone amps use NJM3866. Had any body have experience on this IC ? I also consider to additional a Digital surround on it. I just got a New IC from NJM and start to design PCB soon. Is any body like a Solid state...

You should Short the input to test Hum. It is no meaning to test it with open input. All amplifiers has higher noise when no Input connected. Pop : it may be problem on tube sockets contact. Yes ! Try to tighten it. This problem may be cause by shipping when tube Plug in the sockets. It will...

I understand What is your problem on your Speakers amps with Headphone. The Output Noise Level is very high comapre with Headphone amps. Due to high gain in Spks Amps. It want about 1,000 time more power than Headphone. So the Noise level also very high. Use a Resistor series only can limited...

I had test our proto-type of Headphone adapter. Yes ! It sound quality is highly depend on your Speakers amplifiers quality. Due to Dedicate Headphone amps is very simple and have less signal loss. I'm not try to design a Adapter to replace Dedicate Headphone amps but only less a Normal Speakers...

It seem to be our wrong ! Due to this amp have a tube cage and 6BQ5 and 12AX7 is not big in size. We had been put the tube on sockets when shipping. It may be cause the damage on tube sockets. We have no such problem on other model use same tube sockets. We also use the good quality solder. (We...

I think it has no problem on driving high impedance Headphone with no problem. Most high impedance headphone request very low current. Most of OP amps can delivery more than 10's ma current. It is far more enough than most high impedance Headphone need. It you still worry about damage to you...

Quote: Originally posted by Masz Hmm...the HeadMaster is a solid state amp, powerful and detailed. Maybe Mr Lau's amp can be the HeadMistress since it is a tube amp, lush and lovely and we all know they seduce our senses. Good Idea !

Our North America distributor request me to design a Upgrade version of MG-Head to OTL mode. It will base on MG_head but I consider to use difference power tube. It will keep the style of MG-Head but will be more better. So MG-Head OTL also will coming soon but not for this one.

Quote: Originally posted by Vertigo-1 Antique Sound Labs Vertigo-2 Just order 10 Pcs from our Distributors - Your got the name

[ quote]Originally posted by evilcthul Hey Guys, I'm really sorry about not including your choices on the polls. I live in Australia as my location shows and I only just got back. I'm putting it all up now... As for Headmaster that is a registered trademark Hey ! Every School has a...

Quote: Originally posted by jude Joseph, Unfortunately, HeadMaster is the name of a headphone amp by Sudgen. You can see a link to it by clicking here. Oh ! What a Pity ... Thanks !

How about HeadMaster ?

[Stand By Mode is possible , just additional a Switch to switch off the High Voltage Cage in Black - Yes ! We will supply Cage in black but also a See through Acrylic Plate on the front side.] Originally posted by evilcthul Hey Joseph, Just some ideas: 1. I've read quite a few times...

[It only Use ECC99 x 2 /Channel not 8 Pcs/Channel. ECC99 is a Dual Triode. I parellel total 4 Section to archive low output impedance. Not 8 tube. ]Originally posted by Tomo Hello, Paralleling so many tubes achieve OTL is not a very good idea. This requires precisely matched tubes to avoid...

I will use following Idea in my new Headphone amplifier : 1.Possible to upgrade from Basic version to premium - It will break in to separated power supply section and main amplifiers section. a.a basic power supply b.a Basic OTL amp – ½ 6DJ8 drive to cathode follower. Can drive high...