WHY THIS 1978 RECEIVER STILL WORKS AS A VINTAGE HI-FI CENTERPIECE Weighing in at roughly 23 pounds, this hefty unit was born in Japan during the late 1970s. Outputting 55 watts per channel and loaded with a direct-coupled amplifier section,...
10 FACTORS THAT IMPACT THE WORTH OF VINTAGE AUDIO VIDEO GEAR If you’ve ever compared two vintage receivers, cassette decks, VCRs, or other pieces of older electronics, you may have wondered why one unit sells for significantly more than another...
THE STORIES BEHIND OUR TOP 21 BEST-SELLING AUDIO BRANDS If we were to go into the histories of every vintage audio brand, we’d be here all day (don’t tempt us). But we thought it would be fun to dive into...
WHAT DO AMPLIFIER CLASSES ACTUALLY MEAN? If you’re shopping around for an amplifier, powered speaker, or subwoofer, you may come across terms such as Class A, Class AB, and Class D. At first, these names probably sound like quality ratings,...
HEADS UP! WHAT IS A HEADSHELL? Previously on SpenCertified, we looked at a couple of pieces that make up the Turntable Puzzle. Namely, the two choices for phono cartridges: Moving Magnet and Moving Coil. This time, we’re digging out our...
BEGINNER’S GUIDE TO MOVING MAGNET VS MOVING COIL CARTRIDGES The stylus, cartridge, headshell, tonearm, and phono preamplifier are all pieces of a single puzzle. The cartridge is one of the smaller pieces (though not the smallest - we’ll get to...
COMBINING A 6-DISC CD CHANGER AND CASSETTE PLAYER INTO A SINGLE DECK The BSR MCD 8050 is a perfect example of peak late-1980s audio technology. It's the result of someone looking at a cassette deck and deciding it needed a...
CHOOSE YOUR FIGHTER: COMPARING TWEETER DESIGNS In my last article, I explored the whats, whys, and hows of ferrofluid tweeters. This time, we’re broadening the scope and taking a closer look at the small but mighty driver responsible for bringing...
FERROFLUID AND THE BENEFITS OF USING IT IN SPEAKER DRIVERS What combines acoustics, materials science, and thermal engineering? This guy! Ferrofluid is a fascinating liquid. If you’re reading this, you’re probably familiar with its application in one particular realm: stereo...
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