Hammond 290BX Deluxe Reverb Paper-Wound Replacement Transformer

The 290BX is a 290 Series paper-wound replacement power transformer for Fender guitar amps with a 120V @ 60 Hz primary. The series table references it to the amp listed as DELUEX* (Deluxe), the DELUXE REVERB and the TREMOLUX Tweed, making it a familiar part for technicians who restore and service these models. All model references are for reference only.

• DELUEX*: similar P/N's 125P2A, 125P23B, 022749, 025130; chassis 5A3, 5B3, 5C3, 5D3, 6G3, AB763
• DELUXE REVERB: similar P/N's 125P33A, 022749, 125P23B, 025130; chassis Blackface, Silverface, AA763, AB763, AB868, A1172, A1270, Volume Boost
• TREMOLUX Tweed: similar P/N's 041316, 022723, 125P26A; chassis 5E9, 5E9-A, 5G9

Its secondaries are 660Vct @ 138 mA (Secondary 1), a 50V bias winding (Secondary 2), 6.3V @ 3A (Secondary 3) and 5V @ 3A (Secondary 4). The short description reads "325-0-325,5V@3A, 6.3VCT@3A". The drawing lists dimensions of 2.813" ± 0.063, 4.063" ± 0.125, 3.375" ± 0.063, 2.048" ± 0.063 and 2.250" ± 0.063.

The 290 Series is designed for drop in replacement, with parts made to look similar to original factory units where possible and materials and design specs kept close to the original to preserve the stock "tone". The 290BX ships at 5.32 lbs (2.41 kg), is RoHS and REACH compliant, and carries UPC 623980094052.