York Audio Kw 412 M25sh Irs

Unlike competitors who shoot IRs at bedroom volume, York Audio pushes a high-wattage tube amp (using the KW head) to the verge of power amp distortion. This captures the speaker's dynamic compression. When you dig in hard with your playing, the IR actually responds like a speaker about to break up. This is why the M25SH feels "spongy" and "squishy" under the fingers, especially for lead work.


In the hierarchy of guitar amplification, the Kerry Wright 4x12 cabinet holds a specific and revered status, particularly in the heavier genres of the 1990s and early 2000s (notably associated with bands like Killswitch Engage). Unlike the standard Marshall "checkerboard" cabs, Wright cabinets were known for distinct construction specifications, internal bracing, and wiring techniques that resulted in a tighter low-end response and a more focused midrange. These cabinets are often described as "tuned" for high-gain amplification, offering a resonance that is tighter than a standard Marshall 1960A or 1960B. york audio kw 412 m25sh irs

This paper details the sonic characteristics and technical specifications of the York Audio KW 412 M25SH Impulse Response (IR) collection. This library captures the sonic signature of a vintage Kerry Wright 4x12 cabinet equipped with Celestion G12M-25 "Greenback" speakers. The document explores the historical context of the hardware, the methodology behind the digital capture, the unique frequency spectrum of the captured cabinet, and practical applications for audio engineers and guitarists seeking authentic British rock tones in a digital environment. Unlike competitors who shoot IRs at bedroom volume,


If you’ve bought IRs before, you know the problem: many sound "flat," "boxy," or have that annoying "blanket over the amp" feeling. York Audio solves this with three proprietary philosophies. In the hierarchy of guitar amplification, the Kerry

The York Audio KW 412 M25SH is widely regarded as a reference-standard IR for vintage British rock and high-gain applications. It captures the specific "greenback" character of low-wattage, pre-rola Celestion G12M-25s—known for their woody mids, soft highs, and aggressive but non-brittle attack.