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K-SPEC Western Electric 111C Stereo Transformer Processor | Mix Bus Color Box - $1,800 (Lees Summit)
make / manufacturer:
K-SPEC
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Unlike many transformer boxes that simply house a pair of WE111Cs, this processor provides extensive control over transformer behavior through selectable 600:600 or 150:600 impedance, three-position loading (Open / 620Ω / 150Ω), true hard-wire bypass, and a three-position Ground / Soft Lift / Full Lift system with individual Zobel stabilization networks.
Few passive WE111C processors offer this level of control, allowing you to explore a much broader range of transformer behavior than a fixed-configuration design.
This is no random pair of WE111C transformers. K-SPEC processors are built around carefully selected transformer pairs. The transformers installed in this processor measure approximately 99.56% matched (<0.44% difference) based on documented winding resistance measurements. Unlike many listings that simply state “matched,” this processor includes the measurements to support that claim.
Construction emphasizes low-noise wiring practices, premium Canare internal wiring, point-to-point construction, 90° transformer orientation to minimize magnetic coupling, and long-term serviceability. A printed wiring diagram is included for documentation and future service.
Features
● Genuine Western Electric WE111C transformer pair
● Approximately 99.56% matched (<0.44% difference), based on documented winding resistance measurements
● Independent Left and Right 600:600 or 150:600 impedance selection
● Three-position transformer loading: Open / 620Ω / 150Ω
● True hard-wire bypass
● Ground / Soft Lift / Full Lift switching
● Individual Zobel stabilization networks
● Premium Canare internal wiring
● UV-printed aluminum front panel
● Printed wiring diagram included
Ideal for stereo mix bus processing, mastering chains, stems, synthesizers, keyboards, acoustic instruments, bass, electric guitar, and other line-level applications where the classic sound of Western Electric WE111C transformers is desired.
Each K-SPEC processor is individually assembled, thoroughly tested, and verified prior to shipment.