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Scratch building a 5670 / 2C51 / 396A single tube preamp (linestage) for a 2 channel HiFi stereo system. Single amplification stage through a high quality Output Transformer. This will also drive a high impedance headphones. (i.e. AKG K240 600ohm) This topology is known are Parallel Feed and it requires a high quality capacitor and an unique output transformer to function properly. Specs: 600ohm output ~5-6 db of gain (depending on bias) 1-5670 vacuum tube (1 tube for both channel) Two (2) 15k Pri - 600ohm Sec output transformer Magnequest B7 (or Edcor XSM 15k-600) One 250vac ~25-45ma power transformer (i.e. Hammond 261C6) CRCRC Power Supply Output transformer: If you enjoyed this video and if you downloaded the build documents, please consider buying me a coffee. I would appreciate your support: Valve Amplifiers - Morgan Jones - 12AU7 Preamp build: 6SN7 Preamp build: Preamp Schematic: Basic Layout: Parts List: CCS Worksheet: Alternate Filament supplies: 5670 Tube Data Sheet: Tubes: IU Chassis: WARNING: Tube amplifiers contain very high and potentially lethal voltages! Drain all filter caps and check voltages before commencing work. Hakko Solder Station: Kester Solder: Camera: Canon M50 (Sigma 16mm lens) iPhone 11 Boya By-M1 Lavaliere Mic Lighting: Neewer CB100 Video Light Neewer 26“ Soft Box About This Channel: This channel has a wide variety of content. I’m interested in many things and topics. I create videos on things I like and what I feel my subscribers would like as well. This channel is basically about two things: 1.) Show you how to MAKE things, FIX things, TIPS on how to do things and to give you IDEAS on how to make your life a bit easier! I encourage you to use your hands the to learn something new! 2.) People say I do fun and interesting things and have interesting hobbies. I like to share that with you and I hope this inspires you to do things and to get out there as well! Disclaimer: Some of this links go to my website and some are affiliate links where I’ll earn a small commission if you make a purchase at no additional cost to you.
