Tube output

All OPTs are built in Lundahls dual coil single C-core style and can be ordered with a choice of core air-gap for Push-Pull or Single-Ended applications. Most of Lundahls OPTs can be configured for different primary and secondary impedances. The use of C-cores with well-defined air-gap 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%. Most of the transformers below are available with amorphous iron C-cores. The amorphous cores are considered to have sonic advantages, but the signal level capability with amorphous core is about 30% less than with a conventional silicon-iron C-core.

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LL2785C Lundahl Single-End 300B Tube transformer

In stock!
Shipping time: 1 - 2 workdays

LL2785CAM Amorphous Core Lundahl Single-End 300B Tube transformer

Made to order
Shipping time: 15 - 16 workdays

LL3723 Push-Pull Tube Amplifier Output Transformer

Made to order
Shipping time: 29 - 30 workdays
With a new internal winding structure, we have managed to reach very good HF response in our new push-pull output transformer LL3723 (4.3k : 4,8 ohms).

Lundahl LL1620 output transformer

In stock!
Variations in Variation
The LL1620 is output transformer for tube amplifiers.

Lundahl LL1620AM amorphous core output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays

Lundahl LL1620CFB tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Variations in Subtype
The LL1620CFB is a version of the LL1620 where one primary winding on each coil has been split in half to support Push-Pull Cathode Feedback applications with 25% feedback.

Lundahl LL1620CFB-AM amorphous core output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays

Lundahl LL1623 output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
The LL1623 is output transformer for tube amplifiers.

Lundahl LL1623AM amorphous core output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays

Lundahl LL1627AM amorphous core output transformer

Must be ordered. Ready for shipment in 28 days
Shipping time: 29 - 30 workdays

Lundahl LL1663 Tube amplifier output transformer 4

In stock!
Variations in Variation
The LL1663 is a four-sectioned dual coil C-core tube amplifier output transformer for 5 k: 8 ohms impedance ratio available in PP and SE versions.

Lundahl LL1663Ag Silver wire tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
Turns ratio 12+12 : 1 or (4+8)+(4+8) : 1

Lundahl LL1663AM Amorphous core tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
Turns ratio 12+12 : 1 or (4+8)+(4+8) : 1

Lundahl LL1664 tube amplifier output transformer

In stock!
Variations in Model
The LL1664 is a four-sectioned dual coil C-core tube amplifier output transformer for 3 k: 8 ohms impedance ratio available in PP and SE versions.

Lundahl LL1664AM

Must be ordered. Ready for shipment in 14 days
Variations in Model

Lundahl LL1679 tube amplifier output transformer

In stock!
Variations in Submodel
LL1679 is an output transformer for tube amplifiers, available with different core air-gaps for different types of output stages

Lundahl LL1679AM

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays

Lundahl LL1682 tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
The LL1682 is a four-sectioned, dual coil C-core tube amplifier output transformer for 5.5k: 5 ohms impedance ratio available in PP and SE versions.

Lundahl LL1682Ag silver wire tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays

Lundahl LL1688 tube amplifier output transformer

In stock!
Shipping time: 1 - 2 workdays
LL1688 is an output transformer, designed primarily for 845 tube amplifiers, but the LL1688 is available with different core air-gaps for different types of output stages

Lundahl LL1691 tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
The LL1691 is a dual coil C-core tube amplifier output transformer for 9k: 8 ohms impedance ratio available in PP and SE versions.

Lundahl LL1691B tube amplifier output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
The LL1691B is a dual coil C-core tube amplifier output transformer for 20k: 8 ohms impedance ratio, Based on the LL1691 design. The LL1691B is available in PP and SE versions