EH EL34 - PAIR

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.

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

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

Files:

• Datasheet

• Type: Electrolytic capacitor
• Capacitance: 10 µF
• Voltage Rating: 100 V
• Tolerance: 20 %
• Operating Temperature Range: - 40°C / + 105 °C
• Dimensions: Ø 6,5 mm x 18 mm
• Termination Style: axial

Images are for reference only. See Product Specifications

• Standard Recovery Rectifier
• Voltage max: 1000V
• Current Rating: 1A
• Forward Current: 1A
• Forward Current Avg Rectified, IF(AV): 1A
• Forward Surge Current Max, Ifsm: 1A
• Forward Voltage: 1 V
• Forward Voltage Max, VF:1.3V
• Pack of 10 pcs

• Type: HV ceramic disk capacitor
• Epoxy resin molding
• (insulating and flame retardant)
• Voltage Rating: 2 kV
• Tolerance: - 10 %
• Operating Temperature Range: - 30°C / + 85 °C
• Grid: 7,5

Resistor Metaloxide 2 Watts

• +/- 5% tolerance
• -55° C to 240° C operating range
• Max 500 V
• Excellent flame retardant coating
• Different manufacturers
• Pack of 5

Please note:
These resistors have a very small form factor:
red: l = 10 mm, d = 3.9 mm
green: l = 11.5 mm, d = 4.5 mm

TT Selection: Balanced
Both systems with balanced gain

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.

• Premium gold pin version of 12AX7. High gain preamplifier tube with ultra low noise and detailed musical tone.
• gold PINs

Files:

• Datasheet

Variable voltage control for voltages up to 600 V

Possible applications:
- G2 Control
- Power adjustment

Please see the >>TT VoCoM Projekt-Seite zu finden.

Der Bausatz beinhaltet alle Teile die zum Bau benötigt werden wie Widerstände, Dioden, Leistungstransistor, Kühlkörper, Potentiometer, Schraube, Mutter, Leitung, Beschriftungsschild.

ACHTUNG HOCHSPANNUNG:
Dieser Bausatz ist nichts für Anfänger. Wer nicht weis, was er damit tut, sollte diesen Bausatz auch nicht kaufen !

">>TT VoCoM project page for more infos

Kit includes:
all parts to build this VVC. Resistors, Heatsink, Wires, Potentiometer, PCB, Label, Screws, Nuts.

WARNING: HIGH VOLTAGE !!
This kit is not for beginners. If you do not know what you are doing than you should NOT buy this kit!

2 tubes, matched as pair

Premium high-voltage power pentode, featuring improved materials and workmanship over the original EL34B. Higher impedance design with increased touch responsiveness.

Files:

• Datasheet

HiWatt Style Powertransformer, Drop-In Replacement

• Primary: 115, 230 & 240 V @ 50 Hz
• Sec. 1: 700 V C.T. @ 300 mA
• Sec. 2: 6,3 V C.T. @ 6,5 A
• Sec. 3: Bias Tap 50 V @ 100 mA

Files:

• Datasheet (V2020)
• Datasheet (old)