Universal Single Ended Output Transformers for Tube Amps

Author: Kevin M   Date Posted:3 November 2017 

Universal Single Ended Tube Output Transformers

Part No. Audio Power Max. D.C. Bias
(Watts) (ma)
125ASE 3 25
125BSE 5 45
125CSE 8 60
125DSE 10 70
125ESE 15 80
125FSE 20 90
125GSE 25 100
Part No. Inductance Minimum DC Resistance (+/- 20%)
125ESE 9.58H 90.6 Ohms

 

Tube Output (30 - 75 Watts) Single Ended - HI-FI‚Äč with recommended tubes in the table below transformer models

Part No. Audio Watts Impedance (Ohms) Primary Max DC Bias Inductance Ultra Linear 40% Primary Tap Secondary Impedance (Ohms) Hipot Test (VRMS)
1626SEA 25 600 200 ma. 2.9 Henrys Yes 4-8-16 2000
1640SEA 30 1250 200 ma. 14 Henrys Yes 4-8-16 2000
1627SEA 30 2500 160 ma. 20 Henrys Yes 4-8-16 2000
1630SEA 30 3500 135 ma. 42 Henrys Yes 4-8-16 2000
1628SEA 30 5000 120 ma. 48 Henrys Yes 4-8-16 2000
1642SE 75 5000 300 ma. 53 Henrys No 4-8-16 3500
1629SEA 30 6500 100 ma. 55 Henrys Yes 4-8-16 2000
1638SEA 30 10000 90 ma. 88 Henrys No 4-8-16 2000
Part No. Triodes Pentodes
1626SEA 6C33 -
1640SEA Parallel - 2A3, 6A3, 6B4G, 300B, 572B, 811A Parallel - 6550, 6CA7
1627SEA 2A3, 6A3, 6B4G, 300B 6CA7, 6L6, 807, 5881, 6550, Parallel - 6AQ5, 6V6, EL84
1630SEA 2A3, 6A3, 6B4G, 300B 6CA7, 6L6, 807, 5881, 6550, Parallel - 6AQ5, 6V6, EL84
1628SEA 211, 300B, 572B, 811A 6AQ5, 6V6, 6L6, 807, 5881, 6550, EL84
1642SE Parallel - 211, 572, 811A, 845 -
1629SEA 211, 811A, 572B, 845 6AQ5, 6V6, 6L6, 807, 5881, 6550, EL84
1638SEA 211, 845