Electro-Harmonix
New Matched Trio (3) Electro-Harmonix 7025 (12AX7) Vacuum Tubes
- SKU:
- NP195-3
- UPC:
- 683274026091
- MPN:
- 7025
- Shipping:
- Calculated at Checkout
Description
New Gain Matched Trio of Electro-Harmonix 7025 (12AX7) Vacuum Tubes
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.
Will work in place of: 7025 ,12AX7, 12AX7A, 12AX7EA, ECC83, 12AX7WB, CV4004Testing and/or Matching
At VIVA TUBES, all of our customers get the same high standard of testing and matching. Some sellers charge more for premium matches but we believe all of our customers should get the same level of quality and service.
Tubes are tested and/or matched at full operating voltage with regulated power supply on a Maxi Matcher tester for general mutual transconductance (Gm). In addition, power tubes are tested/matched by plate current (Ip) and preamp tubes are tested/matched by gain. Rectifier tubes will be tested for emissions on a calibrated military grade tube tester.
Our goal is to match within 5% with an upper limit of 15% (15% is the industry limit to consider a set).
Hand written test data included.
Note that we do offer a few models which are tested & matched at the factory. They will be matched by the same parameters (Ip & Gm) but to the manufacturer's standards. Factory testing will be indicated in the item title and description.
Guarantee
We offer a minimum 90 day guarantee covering functional defects - including noise unless otherwise stated. The guarantee period begins the day you receive your order.
Additional Information
reverb_offer: |
off |
reverb_model: |
7025,12AX7,12AX7A,12AX7EA,ECC83,12AX7WB,CV4004 |
reverb_condition: |
Brand New |
reverb_shipping_profile: |
$12.99 |
reverb_upc_does_not_apply: |
on |
Item Type: |
Vacuum Tubes |
Production Era: |
New/Current Production |