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	RCA 5691 6SL7 ECC35 Red Base Tubes - Matched Pair, Tested, NOS, NIB
You are bidding on a matched pair of RCA 5691 6SL7GT ECC35 audio tubes. These tubes are NOS and new in the box. The 5691 is a drop-in replacement for the 6SL7 series of tubes. These tubes have triple mica construction, gray ladder plates, double square getters at the tops of the tubes and steel support rods to minimize microphonics. They have 1965 and 1966 date codes. These were tested on my calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test very strong with readings of 58/62 and 54/60. Minimum is 32. They have also been checked for noise and microphonics in the phono stage of my DIY pre-amp and are dead quiet. All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice - prior to the listing and prior to shipping. I have been selling tubes on the internet since 1998 and have been working with tubes since the early 1960's. If you have not already done so, please take a moment and look at my feedback. *All tubes are 100% guaranteed good on arrival.* Please e-mail me if you have any questions or you may call me at 602-803-6290. These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear. Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals. You can add me to your list of favorite sellers by clicking here. "I will ship overseas" Regarding Shipping Your tubes will be well packed. All tubes are shipped in white boxes or the original boxes if available. They are than are wrapped in bubble wrap and shipped in a box. I have shipped thousands of tubes all over the world and have not yet had any arrive damaged. Payment must be received with 2 days of the auction close. Foreign bidders are welcome to bid. I will gladly combine auctions to save on shipping when possible.

RCA 5691 6SL7 ECC35 Red Base Tubes - Matched Pair, Tested, NOS, NIB

You are bidding on a matched pair of RCA 5691 6SL7GT ECC35 audio tubes.

These tubes are NOS and new in the box.

The 5691 is a drop-in replacement for the 6SL7 series of tubes.

These tubes have triple mica construction, gray ladder plates, double square getters at the tops of the tubes and steel support rods to minimize microphonics. They have 1965 and 1966 date codes.

These were tested on my calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test very strong with readings of 58/62 and 54/60. Minimum is 32.

They have also been checked for noise and microphonics in the phono stage of my DIY pre-amp and are dead quiet.

All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice - prior to the listing and prior to shipping.

I have been selling tubes on the internet since 1998 and have been working with tubes since the early 1960's.

If you have not already done so, please take a moment and look at my feedback.

All tubes are 100% guaranteed good on arrival.

Please e-mail me if you have any questions or you may call me at 602-803-6290.

These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear.

Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals.

You can add me to your list of favorite sellers by clicking here.

"I will ship overseas"

Regarding Shipping

Your tubes will be well packed. All tubes are shipped in white boxes or the original boxes if available. They are than are wrapped in bubble wrap and shipped in a box. I have shipped thousands of tubes all over the world and have not yet had any arrive damaged.

Payment must be received with 2 days of the auction close. Foreign bidders are welcome to bid.

I will gladly combine auctions to save on shipping when possible.

I have sold and shipped electronic equipment and tubes to over 70 countries.

I pack items very well.

See my feedback and bid with confidence!

You may call me (Dave) anytime at (602) 803-6290