Tube amplifiers ( 22 ) :

• 25L6 Amp - Tube amplifier design without a power transformer   
• A hybrid amplifier using a 5687 tube and Magnatec PowerMosFets   
• Ampage - tube amps and music electronics    Rate this link
• Aren's Attic Tube amplifiers - 1626 SE amplifier, ECL86 SE amplifier and tube links   
• Bob's Music/Vacuum Tube Audio / Electronics page - many amplifier circuits   
• Car tube pre amplifier   
• Dynaco Mark 3   
• Dynaco stereo 70   
• Get more power with a boosted triode - Even though 6L6 beam-power tubes have been around for 66 years, they are still quite popular for use in electric-guitar amplifiers, and its cousin, the 6CA7 (EL34) power pentode, is a favorite among audiophiles. This design idea shows the 6L6 connected as a pentode, a true triode, and a "boosted triode," respectively. The boosted-triode configuration allows pentodes to produce pentodelike power while operating in a true-triode mode.   
• Klassiskt 300B slutsteg   
• Klaus Schiffer's audio web site - tube amplifiers and tube information   
• Les projets en cours - tube amplifiers   
• Musical Instrument Tube Amp Building, Maintaining and Modifying FAQ   
• Pure A class - 15W pure A class and push-pull   
• SDS Labs Schematics - solid state class A amplifiers, headphone amplifier, vacuum tube amps   
• Sheldon's Audio Designs - audio DACs and tube amplifiers   
• Traynor Amplifier Schematic Archive - This is a collection of Traynor schematics put on-line.
• Tube Guitar Amp   
• Tube Buffer for CD Player   
• Tube Microphone Preamplifiers V72 (Telefunken/Siemens/Maihak/TAB) - information about the amplifier and the schematic   
• Vintage Quad equipment circuit diagrams   
• Quad 22 - circuit diagram of commercial tube amplifier   

Tube amplifier related circuits ( 3 ) :

• Phantom Power Supply Circuit - A power supply for adding 48 volt phantom power to microphone preamps   
• Regulated 12 Volts DC Power Supply for Vacuum Tube Heaters - this 7812 based circuit circuit can be used with low-hum audio applications such as microphone preamps and for other applications that require well regulated 12 volts   
• Regulated Vacuum Tube Power Supply - outputs regulated 250-300 VDC   

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