I’m unfamiliar with Fritz speakers but have owned from new a pair of Quicksilver Mini Mite mono blocks for the past 18 years. In fact the 18th Anniversary just passed in December since I purchased the Quickies in December of 2006.
Mike Sanders does not worry about flashy products. He builds quality products with simple circuits that last for generations. I once had a pair of the 5 tube version of his original Quicksilver 8417 monoblocks from the mid 1980’s. One of, if not the first audio amplifiers to employ the use of the Philips 8417 Television tube.
What a great sounding amplifier that was! It even astounded the late Harry Pearson of The Absolute Sound, who preferred it to many of the far more expensive amplifiers he was comparing the QS 8417 at the time, in regard to an article that appeared in TAS magazine.
IME the only drawback to the philips 8417 was that it went through tubes at alarmingly high rate, which quickly used up the supply of 8417 output tubes that were available on the secondary market. In fact, while the tubes were still inexpensive, Mike Sanders (President of Quicksilver Audio) bought up thousands of them so that his 8417 owners would have access to new tubes when they needed them; and without marking them up.
However, given the 8417’s tendency to burn out quickly, within a few years Mike’s supply of 8417’s were used up and NOS 8417’s having become scarce, soared in value; in some instances a set of Philips 8417’s becoming as expensive as a pair of used QS 8417’s
The GE version of the 8417 was used as a replacement, however, IME did not sound as good and did not last as long as the Philips 8417’s did.
Glad that you are enjoying your QS amplifier and Fritz speakers!