LUNDAHL Transformers Homepage

PART1. Boards for Lundahl Transformers

For Phono

No more difficulties or problems, clean wiring, and all options.

More info


  • No more experimenting with wire spaghetti.
  • List of many configurations, and ideas of yourself may be possible as well.

More info

For Small Signal Input/Output

  • The simple LL1531 board will do in case where you only need high impedance signal isolation, no nonsense and no troubles.
  • The dual gain board (second picture) uses middle sized transformers. and has optional possibility for tuning, and external gain switch.
  • The multiple gain board (third picture) can be programmed for 6 different gain factors, connect an external gain switch, and tuning. Or,like all boards, use it just in straigh forward in fixed, simple configuration

More Info.

For Large Signal

  • Input
  • Output
  • Interstage

More info

LL1620, LL1623, LL1627, LL9202 primary

For Power Output Transformers

Switched impedance and clean wiring

More info

EE41 Power Suply with CMR Rejection

Lundahl chokes CMR connected

Finally using the 4-Terminal way to connect a choke.

More info

Available Febr 2023



Output SE / PP
Output SE / PP
Plate Choke Power Supply Choke
tube grid Choke
Mains Cleaning Filament Choke
Audio + Microphone
Power Supply
Guitar Input Covers
Interconnect Silver Wound