Tested Pair of 7N7 RCA Loctal Audio Receiver Guitar Preamplifier Vacuum Tube Country of origin: USA Production era: 1950s – 60s estimate Model: 7N7 Manufacturer: RCA Type: CBS Plate type: black T type Base type: 8 pin with metal base collar Spacers: Two Getter frame: NA Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: minor variations Cartons: one available fair shape Usage: ANOS minimal Quantity: 2 Please review the photos for more detail Test results: Strong balanced test results for Gm: 2.35 / 2.3 and 2.4 / 2.3 For Gm, the suggested minimum value is: 1.8 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

Tested Pair of 7N7 CBS Loctal Audio Receiver Guitar Preamplifier Vacuum Tube Country of origin: USA Production era: 1950s – 60s estimate Model: 7N7 Manufacturer: RCA Type: CBS Plate type: black T type Base type: 8 pin with metal base collar Spacers: Two Getter frame: NA Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: same construction Cartons: One available in rough shape Usage: ANOS minimal Quantity: 2 Please review the photos for more detail Test results: Strong balanced test results for Gm: 2.1 / 2.3 and 2.4 / 2.4 For Gm, the suggested minimum value is: 1.8 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

Lovely Leak Varislope pre-amplifier complete with octal umbilical lead for connecting to other Leak power amplifiers. Im sorry but I will only ship within the UK. The shipping cost quoted is for mainland UK only: interested prospective buyers in the Highlands and Islands of Scotland, Northern Ireland of the Isle of Man please contact me for a revised quotation. Local collection from the Wirral is welcomed.

Tested Pair of 7N7 RCA Loctal Audio Receiver Guitar Preamplifier Vacuum Tube Country of origin: USA Production era: 1950s – 60s estimate Model: 7N7 Manufacturer: RCA Type: CBS Plate type: black T type Base type: 8 pin with metal base collar Spacers: Two Getter frame: NA Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: minor variations Cartons: one available fair shape Usage: ANOS minimal Quantity: 2 Please review the photos for more detail Test results: Strong balanced test results for Gm: 2.35 / 2.3 and 2.4 / 2.3 For Gm, the suggested minimum value is: 1.8 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps, and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

Tested Pair of 7F7 GE NOS NIB Loctal Audio Receiver Guitar Preamplifier Vacuum Tubes Country of origin: USA Production era: 1950s – 60s estimate Model: 7F7 Manufacturer: GE Type: preamp Plate type: black round smooth Base type: 8 pin with metal base collar Spacers: Two Getter frame: halo wire Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: same construction Cartons: original excellent Usage: NOS ( new ) Quantity: 2 Please review the photos for more detail Test results: Strong balanced test results for Gm: 1.0 / 1.05 and 1.0 / .95 For Gm, the suggested minimum value is: .72 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps, and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

Tested Pair of 7C7 Crosley NOS NIB Loctal Audio Receiver Guitar Preamplifier Vacuum Tubes Country of origin: USA Production era: 1950s – 60s estimate Model: 7C7 Manufacturer: Rebrands for Crosley Type: preamp Plate type: black round smooth Base type: 8 pin with metal base collar Spacers: Two Getter frame: NA Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: same construction Cartons: original excellent Usage: NOS ( new ) Quantity: 2 Please review the photos for more detail Test results: Strong balanced NOS test results for Gm: 2.6 and 2.7 For Gm, the suggested minimum value is: 1.5 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps, and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

Tested Pair of 7N7 CBS Loctal Audio Receiver Guitar Preamplifier Vacuum Tube Country of origin: USA Production era: 1950s – 60s estimate Model: 7N7 Manufacturer: RCA Type: CBS Plate type: black T type Base type: 8 pin with metal base collar Spacers: Two Getter frame: NA Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: same construction Cartons: One available in rough shape Usage: ANOS minimal Quantity: 2 Please review the photos for more detail Test results: Strong balanced test results for Gm: 2.1 / 2.3 and 2.4 / 2.4 For Gm, the suggested minimum value is: 1.8 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps, and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

Tested Pair of 7F7 RCA NOS NIB Loctal Audio Receiver Guitar Preamplifier Vacuum Tube Country of origin: USA Production era: 1950s – 60s estimate Model: 7F7 Manufacturer: RCA Type: preamp Plate type: black round smooth Base type: 8 pin with metal base collar Spacers: Two Getter frame: halo wire Getter flash: top Filaments: standard Glass: clear Stencils: excellent minimal wear Condition: same construction Cartons: original excellent Usage: NOS ( new ) Quantity: 2 Please review the photos for more detail Test results: Strong balanced test results for Gm: 1.0 / 1.05 and .80 / .85 For Gm, the suggested minimum value is: .72 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps, and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information