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YOU ARE BIDDING ON A MARANTZ 170DC POWER AMPLIFIER PRO SERVICED FULLY RECAPPED WITH BLUE LEDSEXCELLENT COSMETIC CONDITIONLIGHTS UP NICELYWORKS PERFECTFULLY RE-CAPPED All electrolytic capacitors have been replaced with Elna and Nichicon capacitors, DC offset and Bias have been adjusted to factory specs and all solder joints re-soldered, unit serviced to new conditionSHIPPING TO USA AND CANADA $65INTERNATIONAL BUYERS MUST EMAIL FOR SHIPPING COSTGeneralDescriptionFull complementary output, zero phase shift, DC.RarityRareRetail Price440Designed inUSAManufactured InJapanFirst Year1977Last Year1980Matching Preamplifiers3250,3250b,3650Matching Tuners2100,2110,2120,2130Rack MountOptionalWood CaseWC-110Silver FaceYes, ExtrudedChannelsTwoSpeaker ConnectionsOne SetFusingRear panel, bussUnswitched AC OutletsTwo, 100 watts totalSpecial Option 1PhysicalWidth16 1/2Height5 3/4Depth11 3/4Weight28AmplifierRMS Power Per Channel86 @ 8 ohms, 108 @ 4 ohmsTotal Harmonic Distortion (THD)0.03% @ 86, 0.05% @ 108Power Bandwidth20 Hz - 20 kHzGain Control(s)One per ChannelDC CapableYes, switchablePeak Lamp(s)TwoOverload Lamp(s)One per ChannelOutput Meter(s)3 1/4 inch, q2Cooling Fan(s)NoOutput Impedance(s)4 to 16 ohms
For a vintage power amp like this, timing mostly matters because replacement models are long gone and clean examples don’t turn up every day. At US$1,900, this sits a bit above the US$1,750 median and just over the US$1,925 upper quartile, so it reads as slightly ambitious rather than a steal.
That said, this is a respected Marantz piece with real enthusiast appeal: plenty of clean power, a sturdy old-school build, and the kind of presentation people buy these for in the first place. If it’s genuinely well-kept, original, and properly serviced, the premium can make sense. I’d just want clear proof of condition and any recap or maintenance history at this level, because age-related service costs are the main thing that can change the value fast.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Marantz originated in the United States, founded in 1953 by Saul Bernard Marantz, a music enthusiast and amateur musician born in Brooklyn in 1911. Dissatisfied with the audio equipment of the era, he crafted the groundbreaking Audio Consolette preamplifier in 1952 from his New York home, selling the first 100 units rapidly and prompting the formal establishment of the company in Woodside, Queens. Though production later shifted to Japan in partnership with manufacturers like Standard Radio in 1966, and the brand evolved through ownership changes including Superscope and eventual integration into larger groups, its heritage remains rooted in American ingenuity and a relentless pursuit of musical fidelity.
The brand excels in high-end audio components, particularly amplifiers, preamplifiers, and integrated systems that defined its golden era. Iconic models like the Model 7 preamplifier (1958), Model 9 power amplifier (1960), and Model 10B tuner (1964) set benchmarks for performance, while later offerings expanded to tuners, receivers, and CD players. Marantz briefly ventured into speakers under designer Ed May in the 1970s but focused primarily on electronics rather than turntables, headphones, DACs, or cables, emphasizing separates renowned for their "Most Musical Sound."
Marantz commands a premium position in the hi-fi market, revered as a high-end pioneer that shaped the audiophile landscape through the 1970s zenith. Today, it blends vintage allure with modern elegance, appealing to discerning buyers who value durability, innovation, and warm, detailed sound signatures over mass-market accessibility.
See all Marantz listings on RADAR.
