Roost SR-100 100-Watt Guitar Amp Head (1976–1978) – Rare Handwired Southend-Era

For sale is an extremely rare British boutique tube amplifier from the late 1970s: a Roost SR-100 from the highly coveted, handwired "Southend-on-Sea Era" (ca. 1976–1978).Unlike the later, mass-produced Leeds models from the 1980s, this specific amplifier was built completely by hand at the original factory before the company was sold. Roost amplifiers are true insider secrets among vintage gear enthusiasts. Tonally, they are widely considered the perfect hybrid between the earthy, classic crunch of an early Marshall JTM and the massive clean headroom, punch, and definition of a vintage Hiwatt.The amplifier is fully operational, in great working condition, and underwent a professional overhaul/service a few years ago.Technical Specifications

• Year of Manufacture: ca. 1976–1978 (Southend-on-Sea Era, Serial No. 13189)
• Model: Roost SR-100
• Output Power: 100 Watts
• Power Tubes: 4x EL34
• Preamp Tubes: 3x 12AX7 / ECC83
• Rectifier: Solid-State
• Inputs: High & Low Gain
• Controls: Volume, Bass, Mid, Treble, Presence, Master Volume
• Speaker Outputs: Impedance selector for 4 / 8 / 16 Ohms
• Power Connection: Upgraded to a modern, safe IEC socket (standard kettle lead)
• Additional Features: Voltage selector, Standby switch

Sound & CharacterThis amp delivers a phenomenal, authentic British vintage tube tone packed with character: punchy mids, deep tight lows, and open, glassy highs. The clean channel sounds beautifully bell-like and dynamic with incredible headroom. When pushed, it roars into that monumental, iconic 70s rock sound. Thanks to the Master Volume control, you don't have to blast it at stadium levels—it retains its rich tone and response surprisingly well even at lower room volumes.Condition

• Cosmetic: Used with authentic, age-related wear (scuffs/marks/paint), giving it a great vintage vibe.
• Technical: Fully functional and running strong. Professionally serviced a few years ago.

An exceptionally rare piece of British amp history for collectors, vintage tone chasers, and gigging musicians alike.International shipping is available. Please message me for an exact shipping quote to your location or if you have any questions!