-40%
640H grid choke 6dj8 12ax7 5687 5842 6sn7 utc 2a3 12au7
640H grid choke 6dj8 12ax7 5687 5842 6sn7 utc 2a3 12au7

640H grid choke 6dj8 12ax7 5687 5842 6sn7 utc 2a3 12au7

$ 31.67

Availability: 100 in stock
  • Refund will be given as: Money Back
  • Brand: UTC
  • Restocking Fee: No
  • Return shipping will be paid by: Buyer
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days

    Description

    Valab 640H Grid Choke for Tweak Modify Your Tube Amp
    640H grid choke
    What grid choke is? It is long story, detailed information you can get from Dr.Google.
    In brief, grid choke is:
    1) A very high inductance coil which supply extremely large impedance to AC signal but low DC resistance.
    2)Where it is used? In every tube amp, actually for every tubes, all need one 'grid resistor', generally 50k or 100K resistance, connect to ground. Grid resistor supply reference voltage to grid. Grid choke was used for replacement of grid resistor.
    3) Grid resistor seems to be a nothing important in tube amp, not relative to sound quality. It is right! You will not hear difference when you change cheap resistor with very expensive one.
    4) While, if you change grid resistor with grid choke! You will never believe how many music signal ever lost here! Grid choke supply extremely large AC impedance, so no music signal get lost here, but its low DC resistance, give tube grid a stable ground voltage.
    Features of Valab GC640-5 filter choke
    * High grade thin Z11 lamination.
    * 5n oxygen free copper wires was used in coil wiring.
    * 20000 turn coils, generating 640H at 120Hz and over 2500H at 20Hz.
    * Grid choke, look small and simple, but not a low cost iron part! Actually it is a very expensive part only used in most high grade tube amp. When you install it in your tube amp, it will bring you incredible improvement in headroom and detail especially in high frequency.
    The price is for one pair, two chokes.
    If you need more of this product, please query us by eBay messages. We will create a new listing for you.
    Worldwide
    Shipping: will ship worldwide by registered air mail with on-line tracking and insurance.
    Combined shipping fee for multiple items of all my products is welcome and will save you lots of shipping fee.
    Please query me before your bidding.
    We have plenty of stocks of this product. If you need to order more than one set of this product.
    Please query us, we will create a new list for you.
    Wholesale price offered for bulk order.
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