Both tested and are working fine, no model labels on the back.In my best knowledge they are ARS-908 made in Czechoslovakia by Tesla.Each is 9 1/2 high.6 wide and 6 deap, 8 Ohms each. Please visit my eBay store ANTIQUUM for more deals on vintage electronics.Thank you.

ARS Tesla ECC83 Twin Triode Audio Tube • Class A Tested @250V SEE ITEM PICTURES FOR TEST RESULTS. Thanks for visiting our store! Shipping The item will be packaged in original box (if applicable) and then sent out in a seperate shipping box. We use USPS or FedEX shipping services. Please contact us for special shipping needs. Please ask any questions or concerns you have prior to purchasing so your transaction can be fast and accurate!

Vintage Pair Tesla EL34 6CA7 Tube • Class A Tested • Marshall Branded • Matched SEE ITEM SPECIFICS FOR TEST RESULTS. Closely Matched GM and Plate Current. *Tested @ Tube Manual Class A Parameters Thanks for visiting our store! See photos for tube cosmetic condition. If you seek tubes that are tested at tube manual specifications, please consider clicking the Save This Seller link at the top of the page. See our feedback. Thank you. We guarantee and test all our vacuum tubes based on the manufacturers tube Manual specifications using uTracer3+ curve tracer & Tube tester, regulated DC and AC power sources, benchtop and handheld multimeters for accurate precise repeatable measurements. I love my TV-7B, Hickok 800, 6000A, EICO 667, and my B&K 700. But these are just tube testers and not true parametric testing equipment. They are for Go - No Go testing and are best for weeding out bad and weak tubes. Truthfully, the best way to know how a tube will work is to use it in the actual application. The next best thing is to test it at the manufacturers parameters in the tube manual with proper lab or bench testing. This way one knows how close the tube is to its designed standards. This may seem excessive, but we try to offer the tube amp builder, technician, and musician the best service and product we can. More tubes to come. Shipping The tube/s will be packaged in original box (if applicable) and then sent out in a 6x4x4 shipping box. We use USPS or UPS shipping services. Please contact us for special shipping needs. Ask any questions or concerns you have prior to purchasing so your transaction can be fast and accurate!

Both tested and are working fine, no model labels on the back.In my best knowledge they are ARS-908 made in Czechoslovakia by Tesla.Each is 9 1/2 high.6 wide and 6 deap, 8 Ohms each. Please visit my eBay store ANTIQUUM for more deals on vintage electronics.Thank you.

Both tested and are working fine, no model labels on the back.In my best knowledge they are ARS-908 made in Czechoslovakia by Tesla.Each is 9 1/2 high.6 wide and 6 deap, 8 Ohms each. Please visit my eBay store ANTIQUUM for more deals on vintage electronics.Thank you.

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Both tested and are working fine, no model labels on the back.In my best knowledge they are ARS-908 made in Czechoslovakia by Tesla.Each is 9 1/2 high.6 wide and 6 deap, 8 Ohms each. Please visit my eBay store ANTIQUUM for more deals on vintage electronics.Thank you.

ARS Russia JJ Tesla EL34 6CA7 Tube TV-7 Tested on Orange Tube tester 10. Buyer pays all shipping. No Reserve

Used vintage crossovers 3way system, tested, works. Very nice condition, see pictures for details Quite heavy, so shipping may be more Shipping worldwide

Used vintage crossovers 3way system, tested, works. Very nice condition, see pictures for details Quite heavy, so shipping may be more Shipping worldwide

ARS Tesla JJ 12AX7 / ECC83 vacuum tube Test Strong on Orange Tube Tester 9 / 9 testing, Buyer pays all shipping No Raserve