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12DW7 Electro-Harmonix

12DW7 Electro-Harmonix

R 770.00 ZAR
R 770.00 ZAR
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The Electro-Harmonix 12DW7 (also known as the 7247 or ECC832) is a dual-triode preamp vacuum tube manufactured in Russia at the Xpo-Pul (Reflektor) plant. [1, 2, 3]
Key Specifications & Design
Dual-Triode Configuration: Combines two completely different gain sections into a single 9-pin miniature bottle:
  • System 1 (Pins 6, 7, 8): High-gain side with an amplification factor (mu) of 100, acting as a 12AX7 equivalent.
  • System 2 (Pins 1, 2, 3): Medium-gain side with an amplification factor (mu) of 20, acting as a 12AU7 equivalent. [1, 2]
Heater Ratings: Supports series (12.6V, 0.15A) or parallel (6.3V, 0.30A) heater configurations. [1]
Maximum Plate Voltage: 330V. [1]
Balancing Note: Because the two sides have asymmetric gain factors, the tube cannot be internally balanced. [1]

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Product Product subtotal Quantity Price Product subtotal
12DW7 Electro-Harmonix
12DW7 Electro-Harmonix
12DW7 Electro-Harmonix
R 770.00/ea		 R 0.00
Sold out
R 770.00/ea R 0.00