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DIY and Hi-Fi Audio Schematics

DIY and Hi-Fi Audio Schematics

This is our collection of DIY and Hi-Fi Audio Schematics. Feel free to send us your hi-fi audio schematics and we will add them here. If you have built any of these circuits, we would love to hear from you so send us your comments.

Many of these diy Audio Books contain schematics. You can also find more schematics through some of the sites noted on the DIY Audio Links page.

Last update: 24 July 2016

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DIY Audio Schematics

Tube Linestage Preamplifiers

Tube RIAA Phono Hi-Fi Preamplifiers

Tube Amplifiers

2A3 - directly heated power triode

300B - directly heated power triode

EL84, 6BQ5 - power pentode

6V6 - beam power pentode

EL34, 6CA7 - power pentode

6L6, 5881, KT66, 7027 - beam power pentode

KT77 - beam tetrode

6550, KT88, KT90 - beam tetrode

KT120 - pentode

Compactron Tubes

Legend: PP = Push-Pull, SE = Single-Ended, SET = Single-Ended Triode, SIPP = Self-Inverting Push-Pull, UL = Ultra-Linear

DIY Audio Schematics

Solid-State Amplifiers

Solid-State RIAA Phono Preamplifiers

DIY Headphone Amplifiers

IC (Integrated Circuit) Amplifiers

Hi-Fi Audio Schematics

Tube Amplifiers

Headphone Amplifiers