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AT-4 Mic pre amplifier

AT-4 Beta tube mic pre

Transformers:

1 Custom Sowter mic IP

1 Lundahl Line IP

1 Lundahl Line OP

Adjustable HPF filter

Dims: H90 x W216 x D420 2u half 19" width space

Power: 120/240v 50/60hz 20w IEC fused 1.5a

Stand alone unit with rubber feet

Weight: 5kgs

Tubes: 7025/7025

Power supply: Linear

1/ AT-4 REVIEW with Christian Svedin

AT-4 Tube Preamp Test and Review

2/ Timman TU 47V mic REVIEW with Christian Svedin

Review test using the AT-4

3/ The Ultimate U47 Shootout | Stam SA-47 MKIII vs Twin48 vs NLP 47 vs Timman TU47VREVIEW with Christian Svedin

Review test using the AT-4

3/ AT-4 Manual

UPDATED 20/03/26

AT-4 Beta tube mic pre

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