1466 (150 : 600)

The Kraftwerk 1466 is a balanced audio output transformer designed in the classic Marinair/UTC topology. Intended for dynamic processors such as the 1176LN, it delivers a vintage tonal character with modern performance.
It is constructed with specially treated CRGO M6 laminations, annealed for minimal core losses and excellent linearity. The transformer uses an ungapped EI57 core, ensuring maximum inductance and low-frequency extension, ideal for clean, symmetrical push-pull output stages.
 
 
 
Model
1466
Turns Ratio
1 : 2
Impedance Ratio
1 : 4
Nominal Impedance
150 : 600 Ω
Primary DCR
8 + 8 Ω (symmetrical) = 16 Ω
Secondary DCR
25 + 25 Ω (symmetrical) = 50 Ω
Primary Inductance
2.2 + 2.2 H = 4.4 H
Core Material
Specially treated CRGO M6, annealed
Core Format
EI57, ungapped
Max Level (50 Hz, 1% THD)
+22 dBu @ 600 Ω load
Recommended Load
600–2k Ω
 
 
Frequency Response
 
±0.2 dB from 10 Hz to 40 kHz
−1 dB point around 70 kHz
No observable resonant peaks below 100 kHz
Measured with 150 Ω source / 600 Ω load