1166 VT (215 : 600)

The Kraftwerk 1166VT is a painstakingly accurate replica of the early Marinair LO1166 output transformer, as found in classic Neve 1073 modules. This version reflects a rare, vintage configuration with higher secondary resistance, and was selected after analyzing and comparing four original LO1166 units.
Reproducing this version presented a unique challenge, demanding deep technical precision across materials, geometry, and winding techniques. Every detail was reverse-engineered—from insulation capacitance to leakage inductance—to match the tone and electrical behavior of the best original unit.
 
 
 
Model
1166VT
Turns Ratio
1:2.1
 
 
Nominal Impedance
215 : 600 Ω
Primary DCR
7 Ω + 8 Ω
Secondary DCR
30 Ω + 30 Ω 
Primary Inductance
180 mh
 
 
Core Material
Custom CRGO
Core Format
EI57 Gapped
Recommended Load
600–2k Ω
 
Build Characteristics
Gapped EI core for smooth low-end roll-off
Custom coil forms and winding molds
Early-style LO1166 geometry and resistance
Full humbucking symmetry
Identical layer count, wire gauge, and insulation patterns
Year-long R&D based on direct measurements from original units
Frequency Response
Faithful to early Marinair LO1166 tonal curve
Rich midrange, soft top-end, controlled low-frequency extension
Designed to match the performance of the rare early LO1166 version with 30+30 Ω secondary.
Custom-engineered for vintage consoles and outboard preamps.