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Did you know AMS is the only music distributor with four distribution centers? And that means we can offer super-fast shipping on all your music products. Whether you don’t want the spark of inspiration to fade or you really need that replacement speaker before the next show, we have you covered anywhere in the U.S. And even better, it’s FREE!
If defective, this item must be exchanged directly through the manufacturer. It can only be returned to us if it is unopened.
Welcome Canadian musicians! Buying your gear from AMS is as easy as going to a local music store, with more selection and more than competitive prices!
Items with this logo are eligible to ship to Canada. Please note that you will be responsible for payment of brokerage fees, duties and other import taxes applicable to your order.
NOTE: Free shipping offers do not apply to Canadian orders. Please be aware of custom fees - such as taxes and duties - when your order arrives. Since these fees vary from location to location, CUSTOMS FEES ARE NOT INCLUDED IN SHIPPING CHARGES. Please check with your local customs office for more information on the fees in your areas. Refusal to pay these fees will result in an undeliverable order. If returned, we do not refund shipping charges and may assess restocking fees to cover return shipping expenses.
Don’t sell your soul to a creditor to get the gear you need. At AMS, we want to lower the barriers to create. That’s why we offer in-house 0% financing, and you don’t even have to open a new line of credit! Spread out payments on your credit card to simplify financing and avoid hefty late fees or service charges. Cost shouldn’t interfere with your creativity.
The Groove Tubes Process - Step by Step Testing and Selecting Tubes.
Groove Tubes literally goes through thousands of tubes, rejecting more tubes than they accept. They put every tube through a rigorous performance test, one at a time, in real amp circuits. The preamp tubes are rejected for adverse microphonics, low output or high noise. Power tubes are more involved, and they go through additional testing. Here's what they're looking for:
Rating and Matching Tubes.
Groove Tubes translates this gain to distortion ratio into a performance scale that can range up to 100 points, then match up the tubes to within 1 point of each other. To simplify things, they reduce the scale to 1-10 before the tubes leave their shop. All tubes are exactly matched into duets, quartets, sextets and even octets.
More than just Great Tone.
The Groove Tubes Process produces many welcomed improvements:
Groove Tubes. It all Comes Down to Tone.
When you go into a store and buy other tubes, it's a crapshoot. Without The Groove Tube Process, there's absolutely no way of predicting how a tube will sound. When other tube suppliers claim to have "matched" sets, they're referring to the meaningless measurement of the tube's power. As we learned in the beginning, it's a waste of time to measure power because you simply can't hear variations of power (unlike variations in harmonic distortion). And even if you could, the power measurement is always changing as the tube wears (This measurement wouldn't stay "matched" anyway, but theirs do!). Buying Groove Tubes will save you money and a great deal of aggravation, while turning you on to the best tone you're ever heard coming out of your amp! Groove Tubes are more expensive than most other tubes. Now you know why.
The Tube-Tone Phenomenon. The next time you're experimenting with your tone, and before you shell out more bucks on effects, gadgets, guitars, another amp! ... check your amp head and try out a new set of Groove Tubes.
