The GDI21 remains a very useful product for people who can't afford a $180 Tech21 product, or maybe just want to use that type of thing once in blue moon.

The GDI21 probably has two main applications as an extremely affordable product (generally around $30).

Regardless of the real culprit, be it a shady product description, a greedy selling policy, or a not-so-smart customer, what I got is plug-and-fry

Helpful if you are aiming for low stage volume and an XLR output, though I'd recommend any Line6 product if you can dish out the extra dough.

The GDI21 remains a very useful product for people who can't afford a $180 Tech21 product, or maybe just want to use that type of thing once in blue moon.

For the price, it's a decent product

Other than that it's a great product and every guitarist should have it as a backup gear even they won't need it soon.

Amazing product.