These transformer options are for Coil Audio tube preamp modules to swap for different needs and tone.
The CT-110 is our nickel/iron microphone input transformer based on a punchy 1960s small signal coil. It's perfect for all-around use and excels at high transient material. Its design gives it a very forward and rich mid-range, with smooth saturation in the highs and lows.
The CT-110HN is our super-mu microphone input transformer based on a rare 1950s hi-fidelity coil. Detail oriented, it adds an excellent top and bottom extension, and smooth, breathy saturation.
The CT-41 is our line output (or input) transformer based on a popular 1960s Peerless design. Frequency response is ruler flat from 20Hz to 30kHz, dipping just below 1db at 60kHz. Its smooth saturation imparts a rich, wooly, and hi-fi sound to anything that runs through it.
The CT-11 is our Universal 1:1 line isolation transformer. Based on another 1950s coil design, it imparts a rich, hi-fi sound to any signal. The impressive frequency response of +/- .5db from 20Hz - 60kHz make it an unbeatable performer for isolation or balancing unbalanced signals and devices.