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For sale is a used Pioneer GM-A4604 4-channel bridgeable car audio amplifier.This amp has been one of Pioneer’s popular compact multi-channel amplifiers for powering full car speaker systems while maintaining clean sound and reliable performance. Great for front and rear speakers or small subwoofer applications when bridged.The amplifier features a compact chassis that fits easily in most vehicle installations while still delivering strong output and flexibility.Specifications Model: GM-A4604 4-Channel Bridgeable Amplifier 480 Watts Max Power RMS Power: 40W x4 @ 4 Ohms 60W x4 @ 2 Ohms 120W x2 Bridged Class AB Design Variable Gain Control Speaker Level Inputs Bridgeable Channels Compact Heat Sink Design Frequency Response: 10 Hz – 70 kHz Signal-to-Noise Ratio: Approx. 95 dB Cosmetic ConditionUsed condition with visible cosmetic wear from installation and normal use including: scratches, scuffs, edge wear, minor handling marks. Please review all photos carefully for exact condition.Functional ConditionPowers on and functions properly unless otherwise stated.Great For Car speaker upgrades Front/rear speaker systems Budget audio builds Compact installs Small subwoofer setups Included Amplifier only unless shown otherwise in photos._______________ 🎵 Welcome to The Muzic Store INC – Dobbs Ferry, New York! 🎵_______________________________________ Store Hours: Monday–Friday, 11 AM – 6 PM________________________________If you ever need something extra included with your purchase, please let us know before shipping — we’re always happy to help!Located in Dobbs Ferry, NY, The Muzic Store INC has been family-owned and operated since 1982, proudly serving Westchester County and beyond for over 43 years. We’re more than just a music shop — we’re a community of musicians, gear lovers, and industry experts who live and breathe music every day.Buy your gear the way it was meant to be bought — from a store that’s been there through it all and has the vibe and experience to prove it.Whether you’re just starting out or have been playing for decades, our mission is simple: 👉We Help you find the right gear that brings you the most joy in what you do.We are authorized dealers for nearly every major brand, and we stock unique and hard-to-find items that other stores don’t. Don’t miss your chance to grab something truly legendary! 🎷🎻🎙🎺🥁🎸🎹🪕🎵We could have never done this without YOU — our amazing customers. Thank you for supporting us for over four decades! 💕If you have any questions about our listings or need help finding the perfect piece of gear, feel free to contact us anytime. 😁✌
This is a clear buyer’s market for the Pioneer GM-D monoblock, and the US$100 asking price is a standout bargain. Based on the ground truth from recent comparable USD listings, the median used price is US$147, with the 25th percentile at US$123. Since US$100 sits well below that 25th percentile, this is not just fair—it’s a strong deal, likely the best value you’ll find for a trusted Class D monoblock in this category.
The Pioneer GM-D series is well-regarded for its high efficiency, compact size, and reliable power delivery—this monoblock delivers up to 800W RMS at 2 ohms, making it ideal for driving subwoofers in tight enclosures. Its Class D design ensures clean output with minimal heat, and the GM-D line is known for durability and consistent performance even under demanding conditions. At US$100, especially if it’s original-owner or includes accessories like the bass boost remote, this is a genuine buying opportunity for anyone upgrading their car audio setup.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Pioneer traces its roots to 1937 in Tokyo, Japan, when founder Nozomu Matsumoto, inspired by the thrill of imported hi-fi speakers, developed the A-8 dynamic speaker and launched a radio and speaker repair shop. The business formalized as Fukuin Shokai Denki Seisakusho in 1938, evolving into Pioneer Corporation and embodying Matsumoto's philosophy of "Move the Heart and Touch the Soul" through audio innovation.
The brand excels across diverse hi-fi categories, pioneering Japan's first headphones in 1960 with the SE-1 and the world's first component-based stereo system in 1965 via the PSC-5A. Pioneer's portfolio spans amplifiers, speakers, turntables, and DACs, alongside landmark car audio advancements like the 1975 Supertuner-equipped stereo and the 1986 in-car CD player, blending home and automotive excellence.
Today, Pioneer holds a commanding mid-to-high-tier position in the market, revered for reliable, performance-driven gear that balances premium quality with accessibility. Its vintage components attract collectors, while current offerings appeal to discerning buyers seeking robust, innovative sound reproduction without boutique excess.
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