Lundahl Interstage, Headphone and Line Output Transformers
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Lundahl's tube amplifier transformers are of the dual coil single C-core type and can be ordered with a choice of core air-gap for Push-Pull or Single-Ended applications.
Using C-cores with well-defined air-gap results in an almost constant inductance throughout the 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 have sonic advantages, but the signal level capability with an amorphous core is about 30% less than with a conventional silicon-iron C-core.
See PRICES for Lundahl Interstage, Headphone and Line Output Transformers
LL1621 is a noninverting high inductance drive transformer for tube amplifier output stages. The transformer has a unique audio C-core of Lundahl's…
LL1635 is an interstage transformer for tube (valve) amplifiers available in Push-pull or Single-end versions. The transformer is highly sectioned…
LL1660 is an interstage / line output transformer for tube amplifiers. The transformer is available with different core air gap for PP or SE drives.…
LL1671 is a high-current interstage / line output transformer for tube amplifiers. The transformer has various core air gaps optimised for PP or SE…
LL1677 is a high-current interstage transformer with a 1:2 step-up ratio. To achieve the best high-frequency performance, the transformer is wound…
LL1692A is an interstage transformer for tube amplifiers, impedance-wise placed between LL1660 and LL1671. LL1692A has various core air gaps…
The LL2746 is a three-section dual coil C-core tube amplifier step-up interstage transformer. The coil is wound using our low capacitance, high…
The LL2753 is a three-section dual coil C-core tube amplifier interstage transformer. The coil is wound using our low capacitance, high internal…
The LL2756 is a three-section dual coil C-core tube amplifier interstage transformer. The coil is wound using our low capacitance, high internal…
The LL2762 is a three-section dual coil C-core tube amplifier interstage transformer. The coil is wound using our low capacitance, high internal…
LL1630 is a line output transformer for tube amplifiers. The transformer is highly sectioned, and wound with a special low capacitance winding…
The LL1680 line output transformer is made to match or exceed the specs of the UTC transformer LS-27. The LS-27 was used in the RCA Tube Mike Pre (…
LL1689 is a line output transformer for tube amplifiers. The transformer is available with different core air gap for PP or SE drives. The…
LL1930 is designed as a line output transformer for tube preamp para feed output applications. The core is a high permeability mu-metal core. The…
The LL2731 is a four-sectioned dual coil C-core tube amplifier interstage / line output transformer for low-impedance applications. LL2731 is…
LL2763 is a line output transformer for tube amplifiers. The transformer is available in copper or silver wire versions. The transformer primaries…
LL2793NC is a nanocrystalline C-core line output transformer for tube amplifiers. The transformer is available with different core air gap for PP or…
The LL2754 is a four-sectioned, dual coil, low-impedance C-core output transformer for headphone amplifier applications. LL2754 is available in PP…
The LL2765 is a three-sectioned, dual coil, C-core output transformer for headphone amplifier applications. LL2765 is available in PP and SE versions…
The LL2774 is a three-sectioned, dual coil, C-core output transformer for headphone amplifier applications. LL2774 is available in PP and SE versions…