Bourns Potentiometer GTR 250k log Solid Shaft

Universal size for 12" speakers
Dome diameter: 80 mm - recommended for most of the guitar loudspeaker with average beaming

As the frequency increases, the radiation of a loudspeaker is increasingly focused on its center. If the listener is in this beam, the sound is extremely harsh and biting; if one moves to the side of it, the sound becomes significantly darker and treble components are partially missing.
To reduce this behavior, a diffuser is used. This sits directly in the beam of the speaker and deflects the high frequencies very strongly, it breaks the "beam". This makes the sound much fuller and more balanced.

• Type:  PolyesterFilm Capacitors
• Voltage Rating: 100 V
• Tolerance: - 10 % / +10 %
• Operating Temperature Range: - 55°C / + 85 °C
• Termination Style: radial

TT-Selection: Balanced Gain

The Ultimate 12AX7. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.

TT Selection: Balanced
Both systems with balanced gain

JJ's version of the ECC81/12AT7 tube type with a warm and soft sound.

TT Selection: Balanced
Both systems with balanced gain

This tube is recommend to tame the gain of an amp and make it sound "sweeter". The 5751 has only a gain of 70 instead of 100 like the typical 12AX7/ECC83 tube type and can be used as a drop in replacement for 12AX7 / ECC83 tubes.

Boruns GTR Potentiometer for Guitar and Bass
small size

Fender®  Part # 099-1367-000