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>> Breadcrumb :/Tag:tubecad tetra 6dj8 phono preamp

DIY Tube Phono Project Part 5: Circuit Board – Chassis Integration

By | November 16th, 2018|Categories: Wall of sound|Tags: , , , , , |

The finished WOS – Tubecad Tetra Phono Project…..and friends

DIY All-Tube Phono Preamp Project

Part 5, Circuit Board–Chassis Integration

The Finish Line

By Steve Graham

This is it. We wrap it all up here. I hope I’ve enticed a few people to give this project a try. Yes, there have been many long attachments detailing the build procedure, but it’s the pictures that take up a lot of space. If you tackle this project, just take it step by step. Scrolling down to the attachment links below will get you to the finish line.… Read the full article

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DIY All-Tube Phono Stage Project: Part 4, Assembling The Circuit Boards

By | November 2nd, 2018|Categories: Wall of sound|Tags: , , , , , |

DIY All Tube Phono Preamp Project

Part 4, Assembling the Circuit Boards

By Steve Graham

What’s your kryptonite?  Chances are if you’re reading this it’s the warm glow of tubes.  Welcome to my club.

No more preamble, straight to work.  Open and save the attachments below, detailing the assembly of the three(!) circuit boards.  Three?  You’ll see.

The power switch instructions also lists the tools needed for the remainder of the assembly documents.

Link to: Attachment Power Switch PCB Assembly, PDF

Link to: Attachment Amplifier PCB Assembly Standard 6DJ8 Version Part 1, PDF

Link to: Attachment Amplifier PCB Assembly Alternate 12AT7 Version Part 1, PDF

Link to: Attachment Amplifier PCB Assembly All Versions Part 2, PDF

Link to: Attachment Power Supply PCB Assembly, PDF

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DIY All-Tube Phono Stage Project, Part 3: Metal Working For Dummies

By | October 21st, 2018|Categories: Wall of sound|Tags: , , , , , , , |

DIY All-Tube Phono Preamp Project

Part 3, Metal-Working for Dummies

By Steve Graham, chief dummy

Working with fire and steel?  Would you believe alcohol and aluminum?  Bonus points to those who can name the 80’s pop group that issued the album shown above.  No cheating searching the title online.

Before we start torturing some metal: If you are sitting on the fence, wondering whether or not to build one of these for the following reasons:

  1. You think this preamp won’t have enough gain because it uses a 6DJ8 for the first stage (a 12AT7 is used for the second stage): Most line stages have plenty of gain so it takes some of the gain burden off of the phono stage. 
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