Elektrolyt 22 µF @ 35 V

Wire Silicon, SiAF

• Insulation: Silicon
• Operation Voltage: 500 V
• Test Voltage: 2000 V
• Operating temperatures:    –50 bis +180 °C
• Packing:: 5 m
• Cross-Section: 0,5 mm²
• Outer Diameter: 2,1 mm
• Stranded wire structure: 16 x 0,20 mm, tinned copper

TT Selection: Balanced
Both systems with balanced gain

Sweet and warm sounding preamp tube with high gain. We recommend this tube for guitar/bass amps.

Files:

• Datasheet

Terminal lock washer lug for M3 screws.

• Material: Brass
• Contact Finish: Tin
• Pack of 10

With a soft and detailed sound, as well as sufficient headroom, the TT 12AU7/ECC82 enhances the sound characteristics of any amplifier, whether it's for guitar, bass, or high-end. These tubes deliver a dynamic range, captivating listeners and musician with uncompromising clean sounds and rich overdrive.

Features:

• Detailed sound
• Ideal for both low and high gain amplifiers

Tip:
Often, 12AU7 and 12AT7 types are used instead of 12AX7 tubes to either reduce the overall power of the amplifier or to just reduce the overloading of the preamp. In comparison to a 12AX7, the 12AU7 brings about a very large sonic difference, typically much greater than switching from 12AX7 to 5751 or 12AT7.

When using a 12AU7 in a driver stage normally designed for 12AX7, the overall power of the power stage is usually reduced. The extent of this difference depends on the amplifier or circuit. For example, a Marshall amplifier with a 12AX7 in the PI stage set at volume 5 will then reach the same volume level with a 12AU7 at volume 6 (perceived volume, not measured).

Electrical Properties

• Heater Voltage (Uf): 6.3V or 12.6V
• Heater Current (If): 300mA at 6.3V, 150mA at 12.6V
• Anode Voltage (Ua): Maximum 300V
• Grid Voltage (Ug1): -8.5V (typical)
• Anode Current (Ia): 10.5mA (typical)
• Anode Dissipation: Maximum 2.75W per triode
• Anode Resistance (ra): 7.7kΩ
• Amplification Factor (μ): 17
• Transconductance (S): 2.2mA/V
• Input Capacitance (Cin): 1.6pF
• Output Capacitance (Cout): 1.6pF

Mechanical Properties

• Socket: B9A (Noval)
• Number of Pins: 9

Pin Configuration

• 1 Anode (Triode 1)
• 2 Grid (Triode 1)
• 3 Cathode (Triode 1)
• 4 Heater (f)
• 5 Heater (f)
• 6 Anode (Triode 2)
• 7 Grid (Triode 2)
• 8 Cathode (Triode 2)
• 9 Center Heater (f)

Application Notes

• Heater Operation: The tube can be operated at 6.3V or 12.6V, depending on the circuit design.
• Grid Resistors: It is recommended to use grid resistors of at least 1MΩ to ensure stable operation.
• Coupling Capacitors: Capacitors with low capacitance (typically 0.1µF) are recommended to minimize high-frequency interference.

• Type: Tubular Metalized Polyester Film Capacitors
• Voltage Rating: 630 V
• Tolerance: +/- 10%
• Operating Temperature Range: - 40°C / + 85 °C
• Termination Style: axial
• • Non-inductive
  • Self healing windings.
  • Similar to the Mallorys 150-Series

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.

The newest member in the JJ family of ECC83/12AX7 tubes is the JJ ECC83MG. The MG is a 12AX7 with a bit lower amplification than a standard 12AX7. Our measurements show that the difference is small, but the new tube sounds more linear than the standard JJ 12AX7, and in amps produces a milder, gentler sound. The mechanical construction shows that it is not just another minor variation of the normal JJ 12AX7. The new tube has longer plates.
The JJ ECC83MG is interesting for low and medium gain amplifiers, as well as for audio, where a too hot amp needs to be tamed; as well as an alternative to a 12AY7.

Files:

• Datasheet

• Type: Metalized Polyester Film Capacitors (PET)
• Voltage Rating: 630 VDC / 220 VAC
• Tolerance: +/- 10%
• Operating Temperature Range: - 55°C / + 100 °C
• Termination Style: axial

Resistor Metaloxide 2 Watts

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

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

Filter choke, open bracket

• Inductance (+/- 15%): 15 H
• Resistance (+/- 15%): 1026 Ohm
• max Current DC: 30 mA
• max Voltage DC: 400 V
• Leads: min 12 cm
• Hipot tested (100%) mit 1500 VAC

Files:

• Datasheet