For sale: Harman Kardon HK 725 + HK 770 Ultrawideband Pre and Power amplifier from the golden times from Harman Kardon. A beautiful build and easy to serve versetile vintage audio sleeper. Harman Kardon HK770Stereo Power Amplifier (1982)SpecificationsPower output: 65 watts per channel into 8? (stereo)Frequency response: 20Hz to 20kHzDamping factor: 50Input sensitivity: 1.2VSignal to noise ratio: 123dBDimensions: 385 x 72.5 x 320mmWeight: 10.1kgYear: 1980 Stereo Pre-Amplifier (1980-82)SpecificationsFrequency response: 1Hz to 150kHzTotal harmonic distortion: 0.005%Input sensitivity: 2.3mV (MM), 145mV (line)Signal to noise ratio: 90dB (MM), 106dB (line)Dimensions: 385 x 72.5 x 320mmWeight: 4.2kgYear: 1980 Please do not hesitate to contact me regarding this offer or more detailed shipping and handling fees. Also feel free to follow my channel for more mostly vintage audio and speaker gear.Happy bid!

Biete hier den Harman Kardon Stereo-Receiver HK 3770 an.Ist in guten Zustand und stand nun längere Zeit bei mir im Schrank. Hier ein paar Eckdaten zum Gerät: Gerätetyp: Stereo-ReceiverKlang-Ausgabemodus: StereoLeistung sinus in Watt: 2 x 120Bluetooth für Audio-StreamingRDS: JaFernbedienung: JaEingänge: iPod/iPhone-kompatibler USB-Eingang, Audio-Analog, digital koaxial, Digital-Optisch, Phono-Eingang,Netzwerk (RJ-45)Ausgänge: Audio-Analog, Subwoofer, KopfhörerausgangFarbe: SchwarzBreite: 44 cm x Höhe: 12,1 cm x Tiefe: 30 cmGewicht: 6 kgKanäle: 2.0Ausgangsleistung pro Kanal: 120 WattGesamtausgangsleistung: 240 WattTunersektionFM-Tuner: Ja75 Ohm Antennenanschluss: JaAnschlüsseOptischer Digital Eingang: 2xKoaxial Digital Eingang: 1xCinch Audio Eingang: 5xKopfhörerausgang: JaUSB Anschluss: 1xPhono Eingang: 1xSubwoofer-Ausgang: 1x12V Trigger Ausgang: 1xRemote (IR) Eingang: 1xRemote (IR) Ausgang: 1xSchnittstellen & Zusatzfunktion(en)Bluetooth: integriertiPhone/iPod Unterstützung: ja, per USB-KabelDLNA (Streaming von PC/NAS): JaInternet Radio: JaUnterstützte Audioformate: AAC, MP3, WAV, WMA++++++++++++++++++++++++++++++++++++++++Eine Bedienungsanleitung kann über den Link gedownloadet werden:+https://www.harmankardon.de/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwec7510c0/pdfs/HK3700_3770_OM_DE-1.pdf+Versende mit Hermes, Versichertes Paket

The Harman Kardon HK 3770 is a powerful and versatile stereo receiver that can be used with multiple audio outputs and inputs. With an impressive 240 W of power, this receiver is perfect for both home and office settings. Additionally, it comes with a digital tuner and a number of features including analog and digital settings, making it an incredible all-around device. The HK 3770 is designed with a sleek black finish and features raw cable speaker jacks as well as a number of other outputs. This device is compatible with cable and antenna products, as well as usb and digital optical TOSLINK, component, and coaxial digital inputs.

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Harman Kardon HK770 Power Amplifier. Tested & sounding great! Meters work well. Cosmetics are VG, with a few minor scratches.

Check out the photos, item specifics and descriptions. Let me know if you have any questions.

Harman Kardon, HK 770, amplifier

Verstärker/Stereo-Receiver Harman-Kardon HK3770 Der Verstärker/Receiver von Harman-Kardon ist ein Gerät der Spitzenklasse. Sehr pegelfest, dynamisch, kraftvoll, angenehmer, harmonischer Klang, sehr gute räumliche Tiefe der akustischen Abbildung. Man kann z.B. TV, CD-Spieler, DVD-Spieler, Kabel, USB-Sticks, iPhone, iPad etc. anschließen. Das Gerät funktioniert tadellos, ich habe es bis vor Kurzem benutzt. Input: UKW und MW-Antenne, Analog-Audio, optisch Digital-Audio, koaxial Digital-Audio, Phono, Netzwerk, USB Output: Lautsprecher, Subwoofer, Kopfhörer (6,25 mm) Mit Bedienungsanleitung und Fernbedienung. Auf Wunsch optisches Digital-Kabel von Oehlbach, 1,5 m für 10 Euro. Neupreis war 439,- Euro. Technische Daten: Ausgangsleistung: 2 x 120 Watt bei 8 OhmInternetradio (vTuner)MP3/WMA-Wiedergabe über USBUSB-UpgradeiPod/iPhone/iPad/touch-Wiedergabe über USBAudio DSP/Harman Volume (digitale Signalverarbeitung zur Steuerung der Lautstärke)BluetoothDLNA-fähig Eingänge: MW/UKW-Radio5 Analog-Audio1 Phono1 Digital-Audio koaxial2 Digital-Audio optischEthernet-Anschluss RJ45USB Ausgänge: Analog-Audio (2 Lautsprecher-Paare anschließbar)Subwoofer Gewicht: 6 kg Abmessungen: 121 mm x 440 mm x 300 mm Stromaufnahme: max. 480 Watt Eingangsempfindlichkeit: 250 mV/27 kOhm Signalrauschabstand: 100 dB Frequenzgang: 10 - 130.000 Hz Dies ist ein Privatverkauf.

Harman Kardon’s reputation for excellence in sound quality and network connectivity . General Specifications Stereo Power120 watts per channel, two channels driven @ 6/8 ohms, 20Hz – 20kHz, <0.07% THD Input Sensitivity/Impedance250mV/27k ohms Signal-to-Noise Ratio (IHF-A)100dB Frequency Response(@ 1W)10Hz – 130kHz (+0dB/–3dB) Power Consumption<0.5W (standby)

Harman Kardon HK 3770 Verstärker Das Gerät befindet sich in einem optisch guten Zustand. Der Verkauf erfolgt als defekt !!! Soweit scheint alles zu funktionieren. Mängel können nicht ausgeschlossen werden !!! KEINE RÜCKGABE MÖGLICH !!! Verkauf gerne auch an Selbstabholer !!! Zur genauen Zustandsbeurteilung schauen Sie sich bitte die Bilder an.

Harmon Kardon HK770. One cosmetic markRecapped, VU Meter board serviced, upgraded film caps, reflowed/defluxed a few years back.Primarily used to drive headphones out the taps since then. Scratches on the front panel top edge above meter switches

Welcome to Audio/Video Archives, the largest home of audio literature available on eBay! This Advertisement is a reprint from 1981, it is printed on glossy photo paper and is in Excellent condition! The Picture is the picture of the actual item. It is a beautiful piece of Audio History. I have THOUSANDS more from every major brand of Audio from 1950 up to now. ---Satisfaction is GUARANTEED at AV Archives! Take a look at my feedback for satisfied customers! I have been open since 2007 and have sold THOUSANDS of Ads, Reviews, and Brochures to satisfied customers. ---I Ship Worldwide and combine shipping, each additional item is just $1 after the first is paid. ---Each Page is 8.5 by 11 unless otherwise noted in title. ---Single Page, Single Sided Ads, unless otherwise noted in the title. ---These Ads are perfect for framing and placed in your Audio Room. ---I have a HUGE Vinyl Record Store with Thousands of Collectable records, and MANY First Pressings/Audiophile LPs. Just click on my Vinyl Record Store link on the left under categories. Email me for any specific questions, You will hear back from me usually within 4 hours, THANK YOU! Greg Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

For Sale: a Harman Kardon HK3770 2-Channel Stereo Network Receiver with Wired Networking and Bluetooth Connectivity! This Unit is inLike New/Near MINT Condition with Remote Control, Manual and All Accessories. Receiver has Only been Gently Used once in a while. Shows virtually No Signs of Use, has No Damage and has No Issues.Please see photos for Exact Item Condition as the photos are a good part of the description as well. Comes Exactly As Pictured, with Everything pictured Included. This unit has Excellent Performance and Awesome Audio Quality:-). Features multiple connectivity options; like Networking, iPhone/iPod, USB, Bluetooth. For a more complete list of features and specifications please scroll down below:-).This Receiver has been Tested and is GUARANTEED To Be 100% Fully Functional with No Issues.Please feel free to ask any questions. Ships To the Lower 48 Contiguous States Only. No Shipping To APO/FPO OR PO BOXES, Sorry. Harman Kardon HK 3770 Highlights Up to 120W Per Channel Bluetooth Wireless Streaming Ethernet Connectivity Internet Radio Streaming DLNA Content Sharing Integrated Digital AM / FM Tuner 5 x Stereo RCA-In / 1 x Phono-In 2 x Optical / 1 x Coaxial Front-Panel USB Port Smartphone and Tablet Control Modern connectivity, backed by classic sound When you want your music to sound its best, you just cant beat a good two-channel stereo. Connect your speakers to the Harman Kardon HK 3770 and this powerful receiver will bring those tunes to life the way they were meant to be heard. Whether youre listening to songs from a CD, turntable, networked computer, or a smartphone, this receiver has the connectivity to play them and the brawn to bring out their dynamics and detail. Digital inputs even allow it to improve the sound of TVs and streaming media players like Apple TV, too. With so much versatility, this receiver goes above and beyond old-school models, while retaining classic Harman Kardon sound. Clean sound from a new green technology Harman Kardon has been working to make their receivers more energy efficient without compromising sound quality. The HK 3770 represents the fruits of their labor. It utilizes Harman Kardons GreenEdge technology. Rather than redesigning the high-current Class AB amplification stage, this receiver features a new digital power supply. Unlike conventional analog power supplies, this new digital design uses less energy, fewer raw materials, and produces less heat. The result is a lightweight, efficient, eco-friendly receiver that delivers the same sonic benefits weve come to expect from this audio innovator. Enjoy wireless music from smartphones, tablets, and computers The HK 3770 offers two ways to stream music wirelessly. Built-in Bluetooth lets you stream tunes from a smartphone, tablet, and even some computers without a home network. Its the easiest way to enjoy your digital music collection with room-filling sound. If you have a large digital collection stored on a networked computer or NAS, the HK 3770 is Internet-ready. Connect it to your network router and stream music from your computer over your wireless home network. You can also listen to thousands of free Internet radio streams from stations around the world, going far beyond the reach of the built-in AM/FM tuner. Download the free Harman Kardon remote app to your iOS or Android device and use it to control the receiver.App control requires a wireless home network and a wired connection between your receiver and your network router. Connect your iPhone or USB thumb drive The USB port on the HK 3770s front panel lets you plug in your iPhone, iPod, or iPad to listen to music. This connection bypasses the devices digital-to-analog converters in favor of the receivers high-performance DACs. That means youll get smoother sound with more detail than your iPhone can deliver on its own. You can also use the receivers remote to control playback with connected Apple devices. The USB port is also great for playing digital music files on thumb drives by popping them into the USB port. Product highlights: 120 watts x 2 (stereo) into 8 ohms (20-20,000 Hz) at less than 0.07% THD GreenEdge technology combines an energy-efficient, lightweight digital power supply with standard Class AB amplification Internet-ready for listening to music from a networked PC stream music from a DLNA-compatible PC or network-attached storage (NAS) device built-in support for listening to free Internet radio station streams with vTuner built-in Bluetooth for wirelessly streaming music and audio from compatible smartphones, tablets, and computers 24-bit/192kHz digital-to-analog converters free Harman Kardon Remote app lets you use your Apple or Android device as a Wi-Fi remote front-panel USB port for connecting an iPhone, iPad, iPod, or playing music from a thumb drive (MP3, WMA) does not support Apple Lossless files 6 pairs of RCA stereo inputs, including phono input (MM) digital inputs: 2 optical, 1 coaxial preamp output for a powered subwoofer stereo RCA outputs for recording A/B speaker switching binding post connectors for two pairs of speakers 1/4 headphone jack Ethernet port for network connection AM/FM tuner remote control 17-3/8W x 5-1/4H x 12-15/16D weight: 13.2 lbs.

Welcome to Audio/Video Archives, the largest home of audio literature available on eBay! This Advertisement is a reprint from 1981, it is printed on glossy photo paper and is in Excellent condition! The Picture is the picture of the actual item. It is a beautiful piece of Audio History. I have THOUSANDS more from every major brand of Audio from 1950 up to now. ---Satisfaction is GUARANTEED at AV Archives! Take a look at my feedback for satisfied customers! I have been open since 2007 and have sold THOUSANDS of Ads, Reviews, and Brochures to satisfied customers. ---I Ship Worldwide and combine shipping, each additional item is just $1 after the first is paid. ---Each Page is 8.5 by 11 unless otherwise noted in title. ---Single Page, Single Sided Ads, unless otherwise noted in the title. ---These Ads are perfect for framing and placed in your Audio Room. ---I have a HUGE Vinyl Record Store with Thousands of Collectable records, and MANY First Pressings/Audiophile LPs. Just click on my Vinyl Record Store link on the left under categories. Email me for any specific questions, You will hear back from me usually within 4 hours, THANK YOU! Greg Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This Harman Kardon HK770 Ultrawideband DC Amplifier is being sold untested. It includes the Brand, Type, and Model of the item, which are Harman Kardon, DC Amplifier, and HK770, respectively. The amplifier falls under the category of Consumer Electronics, TV, Video & Home Audio, Home Audio, Receivers & Amplifiers, and Amplifiers & Preamps. The item is being sold as is and does not come with any guarantee of functionality. Please review the photos and description closely before making a purchase.

This unit powers on but I dont know if it is working properly. The top cover is missing its screws.Sold as is, for parts or repair.Please see pictures for more details.

Harman Kardon HK770 Ultrawideband DC AmplifierAmplifier powers on but has no outputNo further testing could be performedFuse was checked but was goodHas two broken fins on back left side, see picturesBeing sold as-is for parts/repairMy parts/repair units are always accurately describedPlease check my feedback, I have sold many pieces of parts/repair equipment and I always get positive feedbackWill be carefully packaged for safe shippingWill ship via FedEx

Hi, einiges von meinem Sammlung muss weg, sehen Sie meine Auktionen es gibt einiges interessantes. Hier zu verkaufen, Harman Kardon HK3770, Technisch und Optisch einwandfrei. Mit dem Receiver HK 3770 sind 2 x 120 Watt Leistung gegeben. Die Ausgnge fr zwei Paar Lautsprecher sind umschaltbar und ergnzen lsst sich der Receiver ber fnf analoge Ein- bzw. einem Ausgang, 2 x optisch und 1 x digitalen Eingngen, einem Phono MM-Eingang, Bluetooth und einem USB-Port, der frontseitig angebracht ist und neben Apples iOS-Devices auch den Anschluss anderer USB-Gerte erlaubt. Eine Remote-App erlaubt die Steuerung ber iOS-/Android-Gerte und via DLNA 1.5 lsst sich der Receiver ins Heimnetzwerk integrieren. Der HK 3770 offeriert eine zeitgeme Ausstattung, eine schicke Optik und eine extrem starke klangliche Leistung. + sehr pegelfest + Dynamisch, kraftvoll + Angenehmer, harmonischer Klang + Sehr gute rumliche Tiefe der akustischen Abbildung + Bluetooth, DLNA, Internet Radio + Subwoofer-Pre-Out Bei Interesse bitte anrufen unter 01787618136 an. Es ist Privatverkauf ohne Garantie oder sonstige Leistung. Nur wenn sie damit Einverstanden sind geben sie Ihre Gebot an. Gru

In dieser Auktion bieten Sie auf Harman Kardon HK3770/230 Receiver Empfänger inkl. Netzkabel, Handbuch & Fernbedienung Zustand: gebraucht mit Gebrauchsspuren Lieferung wie abgebildet Diese Ware unterliegt der Differenzbesteuerung. Daher wird die im Kaufpreis enthaltene Mehrwertsteuer in der Rechnung nicht gesondert ausgewiesen.

This unit powers on but I dont know if it is working properly. The top cover is missing its screws.Sold as is, for parts or repair.Please see pictures for more details.

This unit powers on but I dont know if it is working properly. The top cover is missing its screws.Sold as is, for parts or repair.Please see pictures for more details.

HARMAN KARDON : HK 715 : HK 725 : HK 770: HK 100M : Very rare vintage stereo system : The system consists of DC power amplifier , DC power pre - amplifier DC fm / am tuner and lastly DC cassette player . This system has been imported and works through a lower voltage than that used in the UK . There is a voltage converter supplied with the units to enable use within the Uk . Specifications are as follows : Twin Toroidal power ultrawideband direct current amplifier , 2 channel x 2 x 65 watts into 8 ohms , 20 Hz -20 kHz , damping factor : 50 , Input sensitivity 1.2 v , signal to noise ratio 123 dB , A - B four speaker outlet , dimensions 385 x 72.5 x 320 mm , weight 10.1 kg . Direct current pre-amplifier with switch button bass/ treble control function , frequency 1 Hz -150 KHz, total harmonic distortion 0.005% , input sensitivity 2.3 mV ( MM ) 145 mV ( line ) signal to noise ratio : 90 db ( MM ) 106 db (line) , dimensions 385 x 72.5 x 320 mm , weight 4.2 kg . Direct current tuner with am / fm step up / step down tuning , 87.5 MHz on frequency display , 96.2 MHz on frequency counter 999 KHz on frequency display , confirm that frequency reading on frequency counter is 1458 KHz : Direct current cassette player : Professionally serviced with receipt . For those who are familiar with this system words are few , for those who are not , they just do not make them like this anymore . Full metal chassis construction on all components .The pre-amplifier has a unusual switch bass / treble configuration with assisted EQ switch for refined precision listening , The power amplifier is heavy to lift and has several heat sinks on either side maintaining a good transference of heat for continuous long use . The cassette deck has various options for metal & normal tapes : And finally the tuner has a step up/ step down function for precise tuning ensures smooth transition from station to station. Light damage to the front of the power amplifier case (see picture nine ) and some usage marks to units over the years but given this system is over forty years old , the units are in good condition .This sale is for payment through eBay strictly and collection only as the system is to heavy for postage , plus the possibility of damage in transit enforces the reason for collection .In saying that I am willing to work with a buyer who wishes to arrange collection through service of a courier, but please note that I will not be held responsible for any damages which may occur whilst in transit. Please note the hi-fi stand is for display purposes only and is not included in the auction . Please DO not waste your time asking for a particular unit of the set to be sold separately, you will not receive a reply , serious inquiries welcomed .