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Vacuum Tube - 6CA7, Electro-Harmonix
Electro-Harmonix 6CA7 Vacuum Tube Big bottle beam-tetrode version of EL34. Perfect EL34 replacement for Musicman amplifiers.
RoHS Compliant
| Single or Matched | Our Part Number | UPC/EAN |
|---|---|---|
| Matched Pair | T-6CA7-EH-MP | 609722128384 |
| Matched Quad | T-6CA7-EH-MQ | 609722128391 |
| Cathode Current (Ik) | 150 mA | |
| Cathode to Heater Voltage | ± 300 V | |
| Grid 1 Circuit Resistance, Automatic Bias | 0.7 MΩ | |
| Grid 1 Circuit Resistance, Fixed Bias | 0.5 MΩ | |
| Grid 1 Voltage | -100 V | |
| Grid 2 Current | ≤ 20 mA | |
| Grid 2 Dissipation Power | 8 W | |
| Grid 2 Voltage | 425 V | |
| Heater Current | 1.5 A | |
| Heater Voltage | 5.7 V - 7.0 V | |
| Item Diameter | 38 mm | |
| Item Height | 110 mm | |
| Non-linear Harmonic Distortion | 13.5% | |
| Output Power (POut) | ≥ 9.0 W | |
| Plate Current (Ia) | 100 ± 20 mA | |
| Plate Dissipation (Wa) | 25 W | |
| Plate Voltage (Ua) | 800 V | |
| Transconductance (S) | 10 mA/V |
| Packaging Dimensions | Matched Pair version | 4.8 in. × 3.5 in. × 1.8 in. |
| Matched Quad version | 4.8 in. × 3.5 in. × 3.5 in. | |
| Single version | 1.8 in. × 1.8 in. × 4.8 in. | |
| Weight (Packaging) | Matched Pair version | 0.28 lbs. |
| Matched Quad version | 0.56 lbs. | |
| Single version | 0.14 lbs. |
 Specification Sheet | All Models |
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Specifications, Files, and Documents
Questions and Answers
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1 answers
Hi will these valves work well in FENDER CHAMP 25 combo amps
Asked by Anonymous on September 2nd, 2017.
According to our limited resources your amp comes with a single 12AX7. The 12AX7 is a preamp tube and the 6CA7 is a poweramp tube and these are not compatible with each other.
1 answers
I have an original 210/65 Music Man with the original Sylvania 6CA7's, which are still working great (I've continuously used the amp at half power since 1977). Do these EH 6CA7 compare favorably to the Sylvania's as well?
Asked by Anonymous on September 2nd, 2017.
We feel that the EH 6CA7 is a great option in a new production tube. We do not have any direct experience in comparing the EH to a Sylvania but they are compatible.
1 answers
Are they new tubes with company box?
Asked by Anonymous on September 6th, 2017.
Yes, these NIB (new in box) and come with the manufacturer's full warranty.
1 answers
When I buy a matched pair of 6CA7EH at $42.90 this means that this includes a pair, that is, two (2) 6CA7EH matched tubes?
Asked by Anonymous on September 6th, 2017.
Yes, this would be a matched pair of two tubes.
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
Product Reviews
I've used this output tube for years in a Hiwatt DR504 head and they hold up very well and sound good. A friend also uses them in his Sovtek Mig 60 amp with similar results. For me the EH output tubes have been very good durability wise but sort of hit and miss soundwise the 6CA7EH is a hit.
This is EASILY, by far the best 6CA7 big bottle currently available. The GE 6CA7 was the American EL34 and my stock of originals is too precious to run into the ground noodling and practicing. These thing are an extremely close copy, and not just lookalikes either. The Original GE's , with all due respect to those who will swear differently, didnt sound like "half 6L6 - half EL34", they are all EL34. Sometimes I think they sound more like Mullards than Mullards.Not as harmonically rich (EL34 tubes arent very harmonically rich compared to 6L6, 6V6 or 6550 tubes anyway) but they have absolutely microscopic levels of detail and the same forward midrange which the Royal Phillips familly tubes were known for. Very much like the European EL34 .Given the expectation that many people have that the big bottles will be somehow, differently flavored, (than an EL34), i was suprised to hear this tube perform just as its supposed to. Just like the originals. The SED,"Winged C" EL34 and the 6CA7EH are far and away the Best EL34 types in production anywhere in the world today.