
The ROLAND™ JC-120 Jazz Chorus 50th Anniversary Limited Edition is a 350-unit worldwide release made in Japan. The cabinet is finished in natural sakura (Japanese cherry) veneer stained in deep burgundy open-pore; the dark gray grille cloth carries a commemorative badge with a hand-engraved serial number in its lower-right corner. The silky, organic feel of the open-pore finish, the Japanese cherry-blossom heritage carried straight into the material — collector-grade details that set this unit apart from the standard production model. Imamichi Signature is the IR set capturing the speaker response of this specific 50th-anniversary unit.
Since 1975, the JC-120 has stood as the industry's benchmark for clean guitar tone, earning its reputation as the "King of Clean" through players like Andy Summers, Steve Hackett, and Robert Fripp.
At the core of the sound are two 12″ "silver cone" speakers custom-built for Roland, each driven by its own dedicated 60-watt power amp for a total output of 120 watts. The silver cones deliver a crisp top end, transparent tonal character, and clean tones that hold their composure even at high volume. Layered with the open-back cabinet's natural breathing room and three-dimensional sense of depth, this IR set preserves the speaker response that has defined the JC-120's reputation as the King of Clean since 1975. Pair these captures with your amp model of choice, and the speaker character that has sat at the heart of JC-120 cleans steps out into your signal chain.
- Speaker12″ Silver Cone × 2
- Power120 W stereo · Class D
- Configuration2 × 12″ combo
- OriginMade in Japan


— Available in 96 kHz / 48 kHz / 44.1 kHz
Microphones Used
01 / ribbon
VR1
based on a sE Electronics™ VR1
Ribbon microphone with warm, smooth low-mids. Tames harshness and adds a vintage-tape character.
02 / dynamic
57IIISM57 Unidyne III
based on a Shure™ SM57 Unidyne III
The most-used dynamic mic in rock history. Tight, punchy midrange — the standard close-mic on guitar cabs since the 1960s.
03 / dynamic
BACKMD421 White (back-of-cab)
based on a Sennheiser™ MD421 White (back-of-cab)
MD421 White placed behind the cabinet for ambient resonance.
04 / condenser
U47fetU47 FET
based on a Neumann™ U47 FET
Large-diaphragm condenser microphone with warm, clear midrange and extended low-frequency response.
05 / condenser
offU87
based on a Neumann™ U87
Studio standard large-diaphragm condenser. Off-axis position.






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