1987 Marshall JCM 25/50 Silver Jubilee Model 2550 50W Head

1987 Marshall JCM 25/50 Silver Jubilee Model 2550 50W Head - Brett Allen Studio Rental Collection

Condition: Very Good 

Includes: Marshall 2550 head, ANALOGr provenance packet, Danny Ghinn inspection notes

Notes: No footswitch, no back cover 

Serial: S/A 00532

Overview The Marshall JCM 25/50 Silver Jubilee was released in 1987 to mark Jim Marshall's 50th year in music and 25 years of Marshall amplification. Produced only from 1987 to 1989, the Silver Jubilee has become one of Marshall's most sought-after modern classics, used by Slash, Joe Bonamassa, John Frusciante, Alex Lifeson, and many others. This is the 50-watt 2550 head with the signature silver covering, chrome control panel, and commemorative front-panel plaque. Two-channel design (Rhythm and Lead) with the distinctive Rhythm Clip pull switch for a third voicing, plus the half-power switch that drops output from 50W to 25W. All original Drake transformers and no modifications, inspected by Los Angeles technician Danny Ghinn.

Key Details

• Year: 1987
• Model: JCM 25/50 Silver Jubilee, Model 2550
• Power: 50W, switchable to 25W via Low/High Output switch
• Origin: Made in England by Jim Marshall Products Ltd
• Channels: 2 (Rhythm and Lead), footswitchable
• Power tubes: 2x EL34
• Preamp tubes: 3x ECC83 (12AX7)
• Transformers: All original Drake
• Front panel controls: Presence, Bass, Middle, Treble, Output Master, Lead Master (pull for Channel switching), Input Gain (pull for Rhythm Clip)
• Front panel switches: Power, Standby, Low/High Output
• Rear panel: Footswitch jack, FX Send/Return, D.I. out, Loudspeaker outputs, Output Select, Mains Select, H.T. and Mains fuses, Mains input
• Covering: Silver vinyl
• Serial: S/A 00532

Service Summary Inspected by Danny Ghinn on 11/3/25. Verified all original Drake transformers, no circuit modifications present, missing back cover noted. Full Ghinn inspection notes included with sale.

Condition Cosmetic

• Very good vintage condition overall
• Typical cosmetic wear for age on silver covering
• No back cover
• No footswitch

Functional

• Fully functional following inspection
• All original transformers verified
• No modifications present

Provenance From the Brett Allen Studio Rental collection, a long-standing Los Angeles recording backline. Provenance packet included.

Shipping

• Professionally packed and fully insured
• White-glove delivery available
• International shipping available

Final Notes

• Inspected by Danny Ghinn prior to sale; full inspection notes included
• Additional photos and documentation available on request