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*US* BUYERS IGNORE MESSAGE ABOVE SAYING THERE IS TARIFFS FOR THE BUYER THAT IS NOT TRUE! I PREPAY ALL US BUYER TARIFFS NO TARIFFS FOR YOU TO PAY, YOU PAY IS ONLY AT CHECKOUT NO HIDDEN FEES* Specifications:Tuning range: FM, MWPower output: 100W/ch (stereo), 43W/ch into 8Ω (quadraphonic)Frequency response: 10Hz to 50kHzTotal harmonic distortion: 0.5%Damping factor: 40Input sensitivity: 3mV (MM), 150mV (line)Signal to noise ratio: 70dB (MM), 75dB (line)Output: 150mV (line)Speaker load impedance: 4Ω to 16ΩDimensions: 180 x 513 x 405mmWeight: 20kgDescriptionBTL is a JVC original. With it you can play back 2-channel stereo with double power.This is done by linking the power amplifiers so that when you are playing 2-channel sound two of the power amplifiers do not remain idle; by internal connection they are reconnected so that each of the two channels passes through two power amplifiers.The 4VR-5456X is ready for the day when FM discrete 4-channel broadcasting starts.At the moment some 2-channel FM broadcasts are made in matrix 4-channel formats; these can be heard as 4-channel by selecting the appropriate matrix decoder with the mode selector.When 4-channel FM broadcasting starts, connect a demodulator to the jacks on the rear panel, remove the plate holding the FM 4-channel switch in its off position and switch on.Connect the FM DET OUT jack on the rear panel to the demodulators input jack and the demodulator's output jacks to the FM 4-channel input jacks.
Right now this is a seller’s market for collectible vintage receivers, and at US$637 this one sits well above the US$424 75th percentile, so the asking price is ambitious rather than a bargain. Against a US$95 median and US$39 25th percentile, it only makes sense if the servicing is truly documented and the cosmetics are as strong as claimed.
The upside is the appeal is clear: this is a desirable late-70s/early-80s quad receiver with real output, a cult-era footprint, and rarity that can justify a premium when it’s clean and fully sorted. For a buyer, the key checks are proof of service, all channels working quietly, healthy controls, and confirmation that the “rare” presentation isn’t just hype; if those boxes are ticked, it’s still a legitimate enthusiast piece, just not priced like a casual flip.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Monster is an American audio brand founded in 1979 in San Francisco by Noel Lee, an engineer and music enthusiast who started the company by developing higher-performance speaker cable. That origin story still defines the brand: Monster built its name in the early cable era by arguing that better materials and construction could make a real audible difference, especially in home hi-fi and AV setups.
Today, Monster is best known less for traditional audiophile separates and more for consumer audio accessories and connected gear. Its lineup has included audio and HDMI cables, power products, gaming accessories, headphones, speakers, and assorted home-entertainment accessories. It is not primarily a maker of amplifiers, turntables, or DACs.
In market terms, Monster sits closer to the mass-market and mid-tier consumer-audio space than to the high-end audiophile or boutique collector world. It has strong brand recognition and a long heritage, but its reputation is built on broad retail reach, licensing, and practical connectivity products rather than purist reference components. For buyers, Monster is a familiar mainstream name rather than a specialist high-end hi-fi marque.
See all Monster listings on RADAR.
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