Mullard 12AX7 / ECC83 Reissue

JJ's version of the ECC81/12AT7 tube type with a warm and soft sound. Often used for phase inverters or reverb drivers.

Files:

• Datasheet

Fender® style Footswitch
For older Twin Reverb®, Deluxe Reverb, Pro Reverb, Super Reverb, Bandmaster Reverb, and all vintage amps with 2-way footswitchable ON/OFF with RCA connector.

• Color: black
• 2-button
• Vintage style, black
• RCA-Plug
• ca. 5 m shileded wire
• Replacement for Fender 0994051000

Original TBX tone control for most Strats and Teles. CTS manufactured, includes capacitor and comes in original Fender® packaging. Some instruments have a unique tone circuit that features a TBX Tone Control (Patented). The TBX (which stands for Treble Bass Expander), is a dual concentric stacked tone pot. The pot has a detent in the middle position. From 0 to 5 (at the detent), the TBX functions like a normal tone circuit with filtration through a capacitor. Advancing the knob counterclockwise from the detent position gradually filters off high frequencies, like a standard tone control. Rotate the knob clockwise from the detent position, and you add presence and brightness by allowing the pickups' natural resonance to come through.

• Mounting hole distance around 128 mm
• Large Chrome straps
• length around 5-5/8" (14 cm) end to end
• mounting screws included
• For Twin Reverb®, Prosonic™, Vibrosonic, Vibro-King®

Very linear working 12AX7 / ECC83 with long anode plates and spiral heating, which makes the tube less sensitive to interference from AC heating.
We recommend this tube for audio and high-end amps as well as for "modern" Fender amps with more overdrive, but also as an input tube in old Marshall JCM800s.

Note: Tubes equipped with long plates are commonly associated with a "warmer" or "richer" sound, whereas those with shorter plates tend to deliver a "tighter sound". However, tubes featuring long plates exhibit increased sensitivity to vibrations and mechanical disturbances, rendering them less ideal for critical applications.

Files

• Datasheet

Rectifier

Mica Capacitors

• Voltage Rating:    500 V
• Tolerance: 5%
• Operating Temperature Range: - 50°C / + 150°C
• Termination Style: radial

EH 12AX7 / ECC83

• The 12AX7EH provides high gain with ultra low noise and detailed, musical tone that rivals the most desirable NOS types.

Files:

• Datasheet

Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube to be designated 7025. The original 7025 tube was a 12AX7 that was tested and selected for the lowest noise and microphonics for use in the critical first preamp stages of amplifiers where noise and microphonics could be an issue. In order to ensure that the 7025 specification is consistently met, Electro-Harmonix has redesigned the structure of the 12AX7 and has implemented construction techniques to ensure the absolute lowest noise and microphonics possible. In all samples tested, noise and microphonics could not be detected.

The Electro-Harmonix 7025EH has a mid-range that gives clarity and definition to the sound and a smooth top end for warmth and balance. With these characteristics, along with the exceptionally low noise and low microphonics, the Electro-Harmonix 7025EH will work equally well in vintage and modern high-gain guitar amplifiers, as well as sensitive phono preamps.

Blackface amplifier logo includes mounting screws and is designed for the following amplifiers: Super-Sonic series, "94 Twin-Amp, Pro Reverb, Prosonic, Concert Reverb, "65 Twin Reverb, "65 Deluxe Reverb, "65 Super Reverb, Machete, "65 Princeton Reverb, "64 Vibroverb, "68 Custom Princeton, "68 Custom Twin Reverb, "68 Custom Deluxe Reverb, Steel King, Jazz King, Cyber Twin, VM series, Princeton Recording Amp, Bassman Pro series, Stage 1000, Deluxe 900, Princeton 650.