Electro Harmonix

Indirectly-heated full-wave rectifier. Equivalent to EZ81.

2 tubes, matched as pair

Designed to the exacting specifications of the Philips 6CA7. The 6CA7EH is built to withstand today's high-gain amps while still retaining the detailed tone and component integrity of the original.

4 tubes, matched as quad

Designed to the exacting specifications of the Philips 6CA7. The 6CA7EH is built to withstand today's high-gain amps while still retaining the detailed tone and component integrity of the original.

Single tube, not matched

Designed to the exacting specifications of the Philips 6CA7. The 6CA7EH is built to withstand today's high-gain amps while still retaining the detailed tone and component integrity of the original.

Replica of the original RCA 6CG7, rugged design that guarantees long life, linear response and a low noise

Premium gold pin version of Sovtek 6C45Pi super triode. This tube has a very high transconductance for exceptional performance in preamplifier and driver circuits.

The 6SN7EH is a beautiful sounding tube, on par with RCA's red base 5692. It maintains a linear response while being able to accept a full voltage. Vintage amp users and audiophiles will be thrilled to find that a superior quality, ultra low noise replacement finally exists.

4 tubes, matched as quad

Rugged and wonderful-sounding Power Beam tetrode that performs flawlessly at up to 475 volts. Great replacement for single-ended amps such as Fender Champ, or high plate voltage amps like the Fender Deluxe Reverb.

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: Balanced
Both systems with balanced gain

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.

Mullard reincarnated. With the new EL34EH, Marshall amp owners can recreate the balanced tone, deep, tight bass, sweet mids, and well-defined highs of the original equipment Mullards. Innovative design and precision construction give the EL34EH exceptionally smooth and an ideal balance of pleasing even-order harmonics while virtually eliminating undesirable odd-order harmonics.

2 tubes, matched as pair

Mullard reincarnated. With the EL34EH, Marshall amp owners can recreate the balanced tone, deep, tight bass, sweet mids, and well-defined highs of the original equipment Mullards. Innovative design and precision construction give the EL34EH exceptionally smooth and an ideal balance of pleasing even-order harmonics while virtually eliminating undesirable odd-order harmonics.

Files:

• Datasheet

4 tubes, matched as quad

Mullard reincarnated. With the new EL34EH, Marshall amp owners can recreate the balanced tone, deep, tight bass, sweet mids, and well-defined highs of the original equipment Mullards. Innovative design and precision construction give the EL34EH exceptionally smooth and an ideal balance of pleasing even-order harmonics while virtually eliminating undesirable odd-order harmonics.

Files:

• Datasheet

Single tube, not matched

Mullard reincarnated. With the new EL34EH, Marshall amp owners can recreate the balanced tone, deep, tight bass, sweet mids, and well-defined highs of the original equipment Mullards. Innovative design and precision construction give the EL34EH exceptionally smooth and an ideal balance of pleasing even-order harmonics while virtually eliminating undesirable odd-order harmonics.

Files:

• Datasheet

2 tubes, matched as pair

Rugged and reliable EL84 / 6BQ5 tube

4 tubes, matched as quad

Rugged and reliable EL84 / 6BQ5 tube

Single tube, not matched

Rugged and reliable EL84 / 6BQ5 tube