Potentiometer Alpha 16 PCB 100k log

4 tubes, matched as quad

EL34 II has fuller low mids and low end but does not lose headroom in the high end. Stronger than regular JJ EL34 but not as aggressive as the JJ E34L.

• Ua = 250 V
• Ug3 = 0 V
• Ug2 = 265 V
• Ug1 = -13,5 V
• Ia = 100 mA
• Ig2 = 14,9 mA
• S = 11 mA/V
• Ri = 15 kΩ
• μg2/g1 = 11

• Ua0 = 2000 V
• Ua = 800 V
• Wa(max) = 25 W
• Ug20 = 800 V
• Ug2 = 450 V
• Wg2(max) = 8 W
• Ik = 150 mA
• Uk/f = 100 V
• Rk/f = 20 kΩ

Files:

• Datasheet

TT Selection: V1 - Low Noise
This tube is selected for sensitive input stages (V1)

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.

High Power Resistor
Rating: 15 Ohms / 5%
Power: 150 Watt / 55 Watt without heat sink
Size: 97 x 47 mm
Aluminium Chassis
Norm: MiL-R-18546 E (RE 70)

Great for attenuators, power soaks and dummy loads
Very low background noise
RoHS Compliant

• Type: Lock Washer
• Material: Steel
• Surface: Zinc-plated
• DIN: 6797
• Price: Pack with 100 pcs.

High Power Resistor
Rating: 3.9 Ohms / 5%
Power: 150 Watt / 55 Watt without heat sink
Size: 97 x 47 mm
Aluminium Chassis
Norm: MiL-R-18546 E (RE 70)

Great for attenuators, power soaks and dummy loads
Very low background noise
RoHS Compliant

4 tubes, matched as quad

Improved JJ EL34, with a modified cathode.
Hint: if you replace an EL34 with an E34L you should also check the bias.

Files:

• Datasheet

• Original 6K6
• NOS
• Mixed Brands
• not matched

Carbon Composition Resistors

• 1 watt
• -55° C to 125° C operating range
• ± 20% tolerance
• 350 V working, 700 V overload
• Low inductance
• Low capacitance

• Type: Aluminum Electrolytic Capacitors
• Capacitance: 15 µF
• Voltage Rating: 450 V
• Tolerance: +/- 20%
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 14 mm x 30 mm
• Termination Style: axial