WORKING CONDITION: Excellent. This buffer does its job well without adding any significant color to the tone of an instrument. Please note that it does get very warm when in use. 

PHYSICAL CONDITION: Near Mint. There are no visible flaws on this buffer. Purchased brand new and never used, it has zero minutes of use! 

INVENTORY #59347

BRAND: Effectrode Thermionics

MODEL: GL-1A Glass A Triode Buffer

FUNCTION: Vacuum Tube Buffer for Guitar Effects

PRODUCT DESCRIPTION: This listing is for an Effectrode GL-1A Glass A Triode Vacuum Tube Buffer for Guitar Effects w/Box. The Effectrode GL-1A Glass-A Triode Vacuum Tube Buffer is an audiophile-grade tone-retention pedal engineered to prevent signal loading. It preserves the native brightness, clarity, and depth of high-impedance instrument pickups before the signal enters long cable runs or complex pedalboards.

SPECS:

• Serial # 269
• Circuit Type: 100% pure analog Class-A dual parallel cathode follower.
• Internal Voltage: Operates at real amplifier plate voltages (~300V) for massive headroom.
• Vacuum Tube: Vintage New Old Stock (N.O.S.) Mil-Spec Sylvania or Philips 6111 subminiature twin triode pencil tube.
• Frequency Response: Flat from 5Hz to 100KHz (±0.1dB).
• Headroom: Handles signal levels up to 50V peak-to-peak without clipping.
• Impedance: Input impedance greater than 1MΩ; output impedance under 500Ω.
• Enclosure: Hammond 1590B die-cast aluminum with a tough racing-green powder coat.
• Power Requirements: 12VDC @ 600mA (Center-Positive 2.1mm barrel). Note: Requires its specific high-current supply; standard pedalboard supplies can cause damage.

ACCESSORIES INCLUDED: This item comes as seen in photos and includes its original Effectrode power supply and boxes for both the buffer and PSU. 

UNPACKAGED WEIGHT: 1 lbs.

UNPACKAGED DIMENSIONS: 11" x 3" x 5"