Anode chokes, interstage, headphone & line output transformers

Lundahl tube amplifier transformers are built in a house-made dual coil single C-core style and can be ordered with a choice of core air-gap for Push-Pull or Single-Ended applications. 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 chokes and 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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Lundahl LL1621 noninverting drive transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
LL1621 is a noninverting high inductance drive transformer for tube amplifier output stages.

Lundahl LL1630 line output transformer for tube amplifiers

Must be ordered. Ready for shipment in 14 days
LL1630 is a line output transformer for tube amplifiers.
Turns ratio: 7.2 + 7.2 : 1+1

Lundahl LL1635 tube amplifier interstage transformer

In stock!
Variations in Model
LL1635 is an interstage transformer for tube (valve) amplifiers available in Push-pull or Single-end versions.

Lundahl LL1660 Transformer

In stock!
Shipping time: 1 - 2 workdays

Lundahl LL1660Ag

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

Lundahl LL1660AgAM

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

Lundahl LL1660AM Amorph Core interstage / line output transformer

In stock!
Variations in Type

Lundahl LL1660S tube amplifier transformer 5

In stock!
Variations in Model
LL1660S is a version of LL1660 with internal Faraday shields to improve balance in phase splitting interstage applications.

Lundahl LL1660SAM

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

Lundahl LL1668 tube anode choke

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

Lundahl LL1671 line output transformer

Must be ordered. Ready for shipment in 14 days
Variations in Model
High current interstage and line output. 1+1+1+1 : 2+2

Lundahl LL1671AM/30mA Amorphous Core Transformer

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

Lundahl LL1677 high current tube amplifier interstage transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
High current interstage transformer (For 300B driving tube). 1+1+1+1 : 2+2

Lundahl LL1677AM amorphous core interstage transformer

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

Lundahl LL1680 line output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
Turns ratio: 9 + 9 : 1+1+1+1

Lundahl LL1689 line output transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
Line output transformer Based on the LL1660 size and structure

Lundahl LL1692A Line Output Transformer

Must be ordered. Ready for shipment in 14 days
Shipping time: 15 - 16 workdays
LL1692A is an interstage transformer for tube amplifiers, impedance-wise placed between LL1660 and LL1671