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Tube Amplifier Output transformers

 
     
 
Tube Amplifier
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Below you find a list of all our tube amplifier output transformers (OPTs), sorted by primary impedance.

All OPTs are built in our dual coil single C-core style and can be assembled with a huge range of core airgaps for Push-Pull or Single-Ended applications. As you can see, most of our OPTs can be configured for different primary and secondary impedances.

The use of C-cores with well defined airgaps results in an almost constant inductance throughout the whole operating voltage range. For SE transformers, the primary inductance variation due to signal level is less than 7%.


 
     
 
Primary impedance (kOhms) Secondary impedance (Ohm) Max power capability at 30 Hz, Push-Pull Max power capability at 30 Hz, Singel Ended Weight kg Transformer type Configuration  
 
0.6 k 4 Ω 700W 140W 4.5 kg LL1693 C
 
0.6 k 8 Ω 700W 140W 4.5 kg LL1693 D
 
0.6 k 16 Ω 700W 140W 4.5 kg LL1693 E
 
0.65 k 4 Ω 250W 50W

2.5 kg

LL1627 C
 
0.65 k 8 Ω 250W 50W 2.5 kg LL1627 D
 
0.65 k 16 Ω 250W 50W 2.5 kg LL1627 E
 
1.0 k 4 Ω 360W 70W 4.5 kg LL1693 B
 
1.0 k 8 Ω 360W 70W 4.5 kg LL1693 C
 
1.0 k 16 Ω 360W 70W 4.5 kg LL1693 D
 
1.2 k 4 Ω 125W 25W 2.5 kg LL1627 B
 
1.2 k 8 Ω 125W 25W 2.5 kg LL1627 C
 
1.2 k 16 Ω 125W 25W 2.5 kg LL1627 D
 
1.6 k 4 Ω 250W 50W 2.5 kg LL1623 B
 
1.6 k 8 Ω 250W 50W 2.5 kg LL1623 C
 
1.6 k 16 Ω 250W 50W 2.5 kg LL1623 D
 
2.3 k 8 Ω 62W 13W 2.5 kg LL1627 B
 
2.3 k 16 Ω 62W 13W 2.5 kg LL1627 C
 
2.3 k 8 Ω 180W 35W 4.5 kg LL1693 B
 
2.3 k 16 Ω 180W 35W 4.5 kg LL1693 C
 
2.6 k 4 Ω 188W 36W 2.5 kg LL1679 C
 
2.6 k 8 Ω 188W 36W 2.5 kg LL1679 D
 
2.6 k 16 Ω 188W 36W 2.5 kg LL1679 E
 
3.0 k 4 Ω 125W 25W 2.5 kg LL1623 B
 
3.0 k 8 Ω 125W 25W 2.5 kg LL1623 C
 
3.0 k 16 Ω 125W 25W 2.5 kg LL1623 D
 
3.0 k 8 Ω 55W 10W 1.4 kg LL1664 -
 
3.3 k 4 Ω 250W 50W 2.5 kg LL1620 C
 
3.3 k 8 Ω 250W 50W 2.5 kg LL1620 D
 
3.3 k 16 Ω 250W 50W 2.5 kg LL1620 E
 
4.5 k 4 Ω 105W 20W 2.5 kg LL1679 B
 
4.5 k 8 Ω 105W 20W 2.5 kg LL1679 C
 
4.5 k 16 Ω 105W 20W 2.5 kg LL1679 D
 
5.0 k 8 Ω 40W 8W 1.4 kg LL1663 -
 
5.5 k 4 Ω 320W 60W 4.0 kg LL1688 C
 
5.5 k 5 Ω 40W 8W 1.4 kg LL1682 -
 
5.5 k 8 Ω 320W 60W 4.0 kg LL1688 D
 
5.5 k 16 Ω 320W 60W 4.0 kg LL1688 E
 
5.6 k 8 Ω 62W 13W 2.5 kg LL1623 B
 
6.0 k 4 Ω 125W 25W 2.5 kg LL1620 B
 
6.0 k 8 Ω 125W 25W 2.5 kg LL1620 C
 
6.0 k 16 Ω 125W 25W 2.5 kg LL1620 D
 
6.5 k 4 Ω 250W 50W 2.5 kg LL9202 C
 
6.5 k 8 Ω 250W 50W 2.5 kg LL9202 D
 
6.5 k 16 Ω 250W 50W 2.5 kg LL9202 E
 
6.6 k 16 Ω 62W 13W 2.5 kg LL1623 C
 
9.0 k 8 Ω 160W 30W 4.6 kg LL1691 -
 
9.2 k 4 Ω 160W 30W 4.0 kg LL1688 B
 
9.2 k 8 Ω 160W 30W 4.0 kg LL1688 C
 
9.2 k 16 Ω 160W 30W 4.0 kg LL1688 D
 
9.7 k 8 Ω 45W 9W 2.5 kg LL1679 B
 
9.7 k 16 Ω 45W 9W 2.5 kg LL1679 C
 
11 k 4 Ω 125W 25W 2.5 kg LL9202 B
 
11 k 8 Ω 125W 25W 2.5 kg LL9202 C
 
11 k 16 Ω 125W 25W 2.5 kg LL9202 D
 
11.5 k 8 Ω 62W 13W 2.5 kg LL1620 B
 
11.5 k 16 Ω 62W 13W 2.5 kg LL1620 C
 
16 k 8 Ω - 5W 1.4 kg LL2735B -
 
20 k 8 Ω 160W 30W 4.6 kg LL1691B -
 
23 k 8 Ω 62W 13W 2.5 kg LL9202 B
 
23 k 16 Ω 62W 13W 2.5 kg LL9202 C