Tested Pair of GL 1612  6L7 GE Metal Audio Receiver Preamplifier Vacuum Tubes 

Country of origin: USA

Production era: 1940s

Model: GL 1612  6L7  

Manufacturer:  GE

Type:   Preamp / driver

Base type: octal 8 pins

Stencils: excellent

Condition: excellent same construction

Usage estimate: minimal

Cartons: originals good condition

Quantity: 2

Please review the photos for more detail

Test results:

Excellent strong balanced results for Gm: .8 and .85  

The suggested minimum value is: .70

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