THE GREAT MULLARD MAGIC BLOG
MULLARD VALVES FOR HEARING AIDS - PARDON?
Now then, everyone tends to think of Hivac when they think of miniature valves for hearing aids but Mullard made them too. Hearing aid valves were specialised in that...
MULLARD VALVES FOR HEARING AIDS - PARDON?
Now then, everyone tends to think of Hivac when they think of miniature valves for hearing aids but Mullard made them too. Hearing aid valves were specialised in that...