MC phono transformers, audio line transformers, 1:10 transformers
Lundahl LL1544A amorphous audio input transformer, 1:11:4 useFor line, microphone, bridging and low-impedance OTA input stagesBTB's 1:4 mode reverses the data-sheet 4:1 winding configurationMultiple 1:1, 1:2, 2:1 and 4:1 configurations support varied uses
Delivery time: ca. 4 - 8 weeks
Lundahl LL9226XL MC step-up with 1:5, 1:10 or 1:20 for phono useFor DL-103, DL-103R, AT33 and other compatible MC cartridges in hi-fiForty percent more core area than LL9226 provides extra signal headroom7 Hz70 kHz, 33 × 27 × 16 mm, 42 g and two units for stereo overall
Delivery time: ca. 1 - 5 days
Lundahl LL7902 high-level line and isolation transformer for audioFlexible 1:1, 1:2, 1:4, 2:1 and 4:1 configurations for studio useMu-metal core, Faraday screens and a mu-metal shielding enclosure10 Hz100 kHz, 155 g, 66 × 33 × 21 mm and 4 kV AC winding isolation
Delivery time: ca. 1 - 5 days
LL1935 is a 1:10 DI transformer for guitars and microphone input use.It matches high impedance pickups to low impedance preamps.Dual-coil design with shielding and mu-metal core ensures clarity.Mu-metal case provides strong protection from magnetic interference.
Delivery time: ca. 1 - 5 days
LL1588 is a high-level audio transformer for mic and line use.Suitable for input, output, and galvanic isolation applications.Symmetric dual-coil windings reduce external magnetic interference.Mu-metal core, shields, and housing ensure excellent protection.
Delivery time: ca. 1 - 3 days
LL1527 is a truly general-purpose audio transformer.Suitable for mic/line input, output, splitting, and isolation.Dual-coil design with electrostatic shielding ensures clean signals.Mu-metal core and housing provide excellent shielding performance.
Delivery time: ca. 4 - 8 weeks
The LL 9226 is an MC transformer based on the classic LL9206 design.Lower copper resistance improves level handling and response.Dual-coil structure allows flexible ratios and high immunity.Amorphous cobalt core and mu-metal can ensure very low noise and hum.with flexible gain possibilities and best price to quality rate!
Delivery time: ca. 1 - 5 days
LL 1941 is a high-ratio MC step-up transformer for low-output MCs.It uses an amorphous cobalt core and Cardas copper in oversize form.Dual-coil design ensures excellent immunity to magnetic fields..Mu-metal housing provides optimal shielding for delicate signals.very popular MC Input transformer for low output systems.
Delivery time: ca. 1 - 3 days
LL 1933 is a high-performance MC step-up transformer for phono use.It features a nickel core with linear, low-distortion magnetics.Dual-coil design improves immunity to external magnetic fields.Mu-metal housing provides excellent shielding and sound quality.it has a very good price to quality rate!
Delivery time: ca. 1 - 3 days
LL 1931 is a high-end MC step-up transformer with amorphous core.It uses uncut cobalt core and Cardas high-purity copper wire.Dual-coil design provides excellent immunity to magnetic fields.Mu-metal housing ensures maximum shielding and sound fidelity.it has a very good price to quality rate and can be used for Ortofon SPU
Delivery time: ca. 1 - 5 days
LL 1930 is a highlevel 5,8 + 5,8 : 1 + 1 audio transformer.Suitable for microphone, line input, output, and isolation.High-permeability mu-metal core ensures fine signal resolution.No internal shielding for maximum transparency in the signal path.It is symmetrical and has a very good price to quality rate.
Delivery time: ca. 1 - 5 days
Lundahl LL1689/18mA SE line output transformer for valve audioDirect plate feed at 18 mA suits low-impedance tube preamp stagesRatios of 4.5:1, 9:1 or 18:1 support several balanced line outputs90 H, up to 56 V RMS at 30 Hz, 0.75 kg and 4 kV isolation overall
Delivery time: ca. 1 - 5 days
LL 1684 is a highlevel, general-purpose 1 + 1:1 + 1 audio transformerSuitable for microphone, line input, output, and isolation.Symmetric dual-coil windings reduce magnetic interference.Electrostatic shields and mu-metal case ensure protection.it has a very good price to quality rate!
Delivery time: ca. 1 - 5 days
Lundahl LL 1681 is a high-quality MC step-up transformer.It boosts moving-coil cartridges with very low noise and loss.Flexible two ratios allow optimal matching to MC cartridge systems.Integrated electrostatic shielding reduces external interference.it has a very good price to quality rate!
Delivery time: ca. 1 - 5 days
Lundahl LL1680/5mA line output transformer to LS-27 specificationDirect plate feed at 5 mA suits tube preamp and microphone stages15 kO to 600 or 150 O with balanced or unbalanced output options in use210 H, 15 Hz55 kHz, 150 V RMS at 30 Hz and 4 kV isolation overall
Delivery time: ca. 1 - 5 days
Lundahl LL 1678 is a high-quality MC step-up transformer.It boosts moving-coil cartridges with very low noise and loss.Flexible ratios allow optimal matching to MC cartridge systems.Ideal for phono preamplifiers in high-end audio applications.it has a very good price to quality rate!
Delivery time: ca. 1 - 3 days
Lundahl LL 1676 is a versatile audio transformer for line stages.It supports balanced and unbalanced signal configurations.Wide bandwidth and low losses ensure clean audio performance.Ideal for preamplifiers, DACs, and professional studio audio.
Delivery time: ca. 1 - 5 days
LL1545E is an audio transformer designed for line input stages.Two primary and secondary windings with Faraday shielding.Windings allow series, parallel, or individual configurations.Mu-metal core and housing provide excellent shielding.
Delivery time: ca. 1 - 5 days
Lundahl LL1545A flexible line and microphone input transformerMu-metal core and enclosure for balanced professional audio inputsSupports 1:1, 1:2, 2:1 and 4:1 wiring plus signal splitting modesHandles up to +22 dBu at 40 Hz in high-impedance 1:1 input mode
Delivery time: ca. 1 - 3 days
Lundahl LL1540 1:1 high-level line input transformer, mu-metalFor balanced high-impedance inputs driven from 600-ohm audio sourcesDual coils, electrostatic shield and a mu-metal core and enclosure5 Hz50 kHz, 47 g and 4 kV isolation between audio windings overall
Delivery time: ca. 1 - 5 days
850QA Hammond Manufacturing audio transformer line sealedPri 10k/40k Sec 10k/40k +15dBm 43.2x30.5x41.9 mmFreq 20Hz-20kHz, wire leads, potted, shielded, studio, audioFor interstage, isolation, matching, broadcast, recording, DIY
Delivery upon request
850CA Hammond Manufacturing audio transformer mic to line sealedPri 12/48 Sec 150/600 +15dBm DCR 6/70 ohm 43.2x30.5x41.9 mmFreq 20Hz-20kHz, wire leads, potted, shielded, studio, audioFor mic to line, emitter to line, broadcast, recording, DIY
Delivery time: ca. 4 - 8 weeks
560N Hammond Manufacturing audio transformer broadcast linePri 150/600 Sec 10k/40k 0dBm 30Hz-30kHz 33.8x41.7x21.6 mmPCB pins, potted, humbucking, split windings, studio, audioFor collector to line, gain stepup, broadcast, recording, DIY
Delivery time: ca. 4 - 8 weeks
850NA Hammond Manufacturing audio transformer line sealedPri 600/150 Sec 10k/40k +15dBm 43.2x30.5x41.9 mmFreq 20Hz-20kHz, wire leads, potted, shielded, studio, audioFor output to line, matching, interstage, broadcast, recording, DIY
Delivery time: ca. 1 - 3 days
MC step-up transformers, line input transformers and line out transformers – selection, applications, upgrades and replacement for high-end preamplifiers
What are MC step-up transformers, input transformers and line out transformers?
MC step-up transformers, input transformers and line out transformers are audio transformers that passively transform signals, provide galvanic isolation, and enable defined impedance and/or level matching. They are used in high-end preamplifiers, phono stages and studio equipment when noise, hum, grounding behavior and transfer quality must be controlled.
In DIY hi-fi and studio setups, transformers are attractive because they work without active electronics and can provide a robust, often very low-interference interface between the source, the gain stage and the following device.
What is an MC transformer used for in a moving-coil phono preamp?
An MC step-up transformer is a passive input transformer that boosts the very small signal from a moving-coil cartridge and simultaneously provides correct electrical loading into a phono preamp. It is used when a low-noise, low-interference step-up without active gain is desired and when turns ratio, loading impedance and bandwidth should be tuned deliberately.
Important: turns ratio and impedance are not “universal”. The MC transformer must match the cartridge’s internal resistance, the target load, and the input stage (MM phono input or an active MC stage), otherwise level, noise performance and high-frequency behavior can change noticeably.
When is a line input transformer useful in line-level or studio applications?
A line input transformer is a line transformer placed at the device input that provides galvanic isolation and defined impedance matching while reducing issues such as ground loops and interference pickup. It is useful when sources and amplifiers have different ground references, long cable runs are used, or when a balanced interface should be implemented in a robust way.
For studio gear and high-end preamps, the priority is clean transfer at real-world levels: sufficient bandwidth, low distortion, and the correct termination are essential so that dynamics and tonal balance are not changed unintentionally.
What is a line out transformer and what is its benefit at the output?
A line out transformer is an output transformer for line-level signals that feeds the next stage with galvanic isolation and—when required—balanced (symmetrized) signal delivery. It is used to avoid ground loops, define output impedance, or drive long cable runs more reliably.
In preamplifiers, a line out transformer can also make the interface to power amps, active speakers or studio equipment more repeatable. The transformer must match source impedance, load and target level to avoid unwanted compression, level shifts or bandwidth limitations.
Which specifications matter most when selecting these transformers?
Key parameters are turns ratio, impedances (source/load), bandwidth/frequency response, and permissible levels without saturation or increased distortion. Leakage inductance and winding capacitance influence high-frequency behavior, phase response and possible resonances; for MC transformers, correct cartridge loading is particularly important.
For B2B users (service shops, OEMs, developers), documented measurements, batch repeatability and well-defined wiring/shielding concepts matter as well, so results remain consistent across units and production runs.
How do I choose the right transformer for an upgrade or a service replacement?
A transformer is suitable as a replacement when electrical corner values (ratio, impedances, level headroom), wiring concept and mechanical installation dimensions fit the device. For upgrades, the goal should be explicit: optimal cartridge matching and noise performance for MC transformers, robust low-noise interfacing for input transformers, and stable drive plus clean isolation at the output for line out transformers.
After replacement, a functional check in the device is recommended: level, channel balance, hum/noise floor and behavior into real loads. For workshops, an incoming inspection is useful (winding resistances, turns ratio, insulation) to eliminate signal-path fault sources early.
What about availability, shipping and use in Germany/Europe?
MC transformers, input transformers and line out transformers are frequently used as spare parts and upgrade components in high-end preamps, phono preamps and studio chains—for example from Lundahl. In Germany and across Europe, predictable availability matters because builds and service cases are often time-sensitive.
End customers benefit from selection guidance based on ratio, impedance and mounting format, while professional users and businesses rely on consistent specifications, documented data and reliable re-ordering. International shipping is relevant for export equipment, globally supported service cases and studio/hi-fi setups outside Europe.