Immerse yourself in high-quality audio with the Denon AVR-X1100W, a versatile 7.2-channel AV receiver known for its exceptional performance. Offering built-in Wi-Fi and Bluetooth, this receiver allows for easy wireless streaming and integration with popular music services. Its impressive features deliver powerful and detailed sound for movies, music, and games.Key Features:Powerful Performance: 7 channels, each providing 95 watts at 8 ohms or 145 watts at 6 ohms, ensuring powerful and controlled sound.Advanced Connectivity: Equipped with Wi-Fi, Bluetooth, and AirPlay for wireless streaming, plus a USB port for direct device connection.High-Quality Audio: Supports DTS HD Master, Dolby TrueHD, and Audyssey MultEQ XT for optimal sound quality.Video Capabilities: 4K Ultra HD 60Hz pass-through, 4:4:4 Pure Color sub-sampling, and compatibility with 3D content.Multi-Room Audio: Features two multi-room zones, allowing different audio sources to be played in different rooms simultaneously.Easy to Use: User-friendly setup with an on-screen guide and hybrid GUI.Eco Mode: Energy-efficient with a real-time power consumption Eco meter.Dual Subwoofer Outputs: Connect two subwoofers for enhanced low-frequency performance.Condition:Lightly Used but in good working order. I have replaced the display fuse with an upgraded version, which is the biggest issue for this model.Includes a remote control.Has been tested for functionality.This Denon AVR-X1100W is an ideal choice for audio enthusiasts seeking a blend of power, performance, and connectivity in their home theater setup.

Please contact us for size and details. We only sell genuine and authentic products. Please message us if you would like to see the size details. We can only communicate in English. Please contact us in English.DescriptionAs shown in the photo.If you have any questions about an item, such as its condition or size, please be sure to ask before purchasing.Please do not ask questions after purchase.We will answer questions such as size and condition immediately.PaymentPlease pay as soon as you purchase the item.If you cant pay immediately, dont buy the item. Currently, the collection of DHL and FedEx ,EMS is unstable due to seasonal factors and the influence of Global virus damage. We will give you the tracking number once the shipment is complete.ShippingPlease message me anything you would like to know about the item.Shipping from JAPAN with fully insured trackable online. via FedEx or DHL or EMS/ Expedited shipping services! * If you are in a hurry to receive the cargo, please contact us before purchasing.We send a product with careful packing. Shipping is only available to the address registered in eBay.Please note that any address not registered in eBay is not acceptable to ship. After confirm your payment, Well ship this item within 5 business days.(except for Saturday, Sunday and national holiday in JAPAN)Terms of SaleMoney back guarantee available if customer want return.About UsMoney back guarantee available if customer want return.We are located in Japan. If you have any questions or request about items, please feel free to ask us.International Buyers - Please Note:Import duties, taxes, and charges are not included in the item price or shipping charges. These charges are the buyers responsibility.Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as gifts. The US and International government regulations prohibit such behavior.

100% Authentic! All packages are shipped directly from Japan!Condition DescriptionRelease date: 2014 Accessories: Power cable, remote control Please Note shipping from Japan. Policy PaymentYou can use various payment methods based on eBay Managed Payments. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility.Cancellations & ReturnsCancellation or returns will be accepted only if the item has an obvious problem that was not mentioned in the listing description. If that, please let us know within 3 days you got the item. Buyer is responsible for shipping costs and any charge incurred shipping products back.International BuyersImport duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.

SEND OFFER all items included are tested and working but may show some signs of wear and tear Due to the nature of eBay if this listing has more than one unit quantity it means you may not receive the exact product pictured , however all items will be the same exact model and be in similar condition. Shipping to continental us only. Returns excepted up to 30 days after product delivery, buyer pays return shipping. The serial number for all items in this listing has been noted. Any attempt to file a refund and send back a product other than the one that was shipped to you will result in a denial of said refund.

Denon AVR-X1100W AV-Surround-Receiver, WLAN, Bluetooth, 4K Hi-Res-Audio-Unterstützung BeschreibungDENON AV-Verstärker AVR-X1100W mit Fernbedienung Die Auflistung gilt für das Hauptgerät und die Fernbedienung. Weiteres Zubehör ist nicht vorhanden. Zahlung Wir akzeptieren NUR verwaltete Zahlungen. Bitte bezahlen Sie uns innerhalb von 5-10 Tagen nach Auktionsende. Versand Ich versende es in Expressversand (EMS, Fedex, DHL)Ich füge die Sendungsverfolgungsnummer bei. Bitte bieten Sie es ohne Sorge*Für einige Länder in Zentralasien (Kasachstan, Kirgisistan, Tadschikistan usw.) können wir den internationalen E-Paketdienst (Japan Post) nicht nutzen. Wenn Ihre Lieferadresse in diesen Gebieten liegt, kontaktieren Sie uns bitte, bevor Sie ein Gebot abgeben. *Für Kuscheltierprodukte verwenden wir möglicherweise Kompressionsbeutel für den Versand (Bitte haben Sie Verständnis, dass einige Falten auftreten können). Internationale Käufer - Bitte beachten Sie: * Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren gehen zu Lasten des Käufers.* Bitte erkundigen Sie sich vor der Gebotsabgabe/dem Kauf beim Zollamt Ihres Landes, wie hoch diese zusätzlichen Kosten sein werden.* Diese Gebühren werden normalerweise von der liefernden Frachtfirma (Versandfirma) oder bei der Abholung des Artikels erhoben. Verwechseln Sie sie nicht mit zusätzlichen Versandkosten.* Wir kennzeichnen Waren nicht unter Wert und kennzeichnen Artikel auch nicht als „Geschenke“. US-amerikanische und internationale Regierungsvorschriften verbieten ein solches Verhalten. ?AchtungJe nach Wohnort und Nutzung benötigen Sie möglicherweise einen Steckeradapter für das Batterieladegerät.Der Steckertyp dieses Ladegeräts ist A

ShippingDHL or FedEx or Japan Post. - Orders are shipped within 5-10 business day after received payment.- We can only ship to the registered address as stated in your payment . International Buyers - Please Note:Electronics that uses a power supply should pay attention to the voltage.Most of the Electronics we sell operates on 100v.Always make sure you have the correct voltage before connecting to the power supply.Depending on the Electronics and country, a transformer may be required.Malfunctions caused by connecting the wrong voltage cannot be returned.Please be careful.Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying.

Immerse yourself in high-quality audio with the Denon AVR-X1100W, a versatile 7.2-channel AV receiver known for its exceptional performance. Offering built-in Wi-Fi and Bluetooth, this receiver allows for easy wireless streaming and integration with popular music services. Its impressive features deliver powerful and detailed sound for movies, music, and games.Key Features:Powerful Performance: 7 channels, each providing 95 watts at 8 ohms or 145 watts at 6 ohms, ensuring powerful and controlled sound.Advanced Connectivity: Equipped with Wi-Fi, Bluetooth, and AirPlay for wireless streaming, plus a USB port for direct device connection.High-Quality Audio: Supports DTS HD Master, Dolby TrueHD, and Audyssey MultEQ XT for optimal sound quality.Video Capabilities: 4K Ultra HD 60Hz pass-through, 4:4:4 Pure Color sub-sampling, and compatibility with 3D content.Multi-Room Audio: Features two multi-room zones, allowing different audio sources to be played in different rooms simultaneously.Easy to Use: User-friendly setup with an on-screen guide and hybrid GUI.Eco Mode: Energy-efficient with a real-time power consumption Eco meter.Dual Subwoofer Outputs: Connect two subwoofers for enhanced low-frequency performance.Condition:Lightly Used but in good working order. I have replaced the display fuse with an upgraded version, which is the biggest issue for this model.Includes a remote control.Has been tested for functionality.This Denon AVR-X1100W is an ideal choice for audio enthusiasts seeking a blend of power, performance, and connectivity in their home theater setup.

PaymentRest assured that our store offers a variety of payment methods.Please pay within 5 days after auction is finished. About UsWe are located in Japan.For electrical products check the manufacturer and product and convert to the voltage of each country.We plan to ship by FedEx or DHL.Please contact us as the shipping fee can be changed in some cases. Its our pleasure to make you happy by proposing our recommend item.If you have any questions or request about items please feel free to ask us. International Buyers - Please Note:-Import duties taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility.-Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying.-These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.-We do not mark merchandise values below value or mark items as - gifts - The US and International government regulations prohibit such behavior.>

Denon AVR-X1100W Zustand Gebraucht - als ERSATZTEIL / DEFEKT. OHNE ORIGINALVERPACKUNG, KEINE ANSCHLUSSKABEL / NETZKABEL. NUR DER RECEIVER. Privatkauf keine Rcknahme und keine Garantie.

Works great

Immerse yourself in high-quality audio with the Denon AVR-X1100W, a versatile 7.2-channel AV receiver known for its exceptional performance. Offering built-in Wi-Fi and Bluetooth, this receiver allows for easy wireless streaming and integration with popular music services. Its impressive features deliver powerful and detailed sound for movies, music, and games.Key Features:Powerful Performance: 7 channels, each providing 95 watts at 8 ohms or 145 watts at 6 ohms, ensuring powerful and controlled sound.Advanced Connectivity: Equipped with Wi-Fi, Bluetooth, and AirPlay for wireless streaming, plus a USB port for direct device connection.High-Quality Audio: Supports DTS HD Master, Dolby TrueHD, and Audyssey MultEQ XT for optimal sound quality.Video Capabilities: 4K Ultra HD 60Hz pass-through, 4:4:4 Pure Color sub-sampling, and compatibility with 3D content.Multi-Room Audio: Features two multi-room zones, allowing different audio sources to be played in different rooms simultaneously.Easy to Use: User-friendly setup with an on-screen guide and hybrid GUI.Eco Mode: Energy-efficient with a real-time power consumption Eco meter.Dual Subwoofer Outputs: Connect two subwoofers for enhanced low-frequency performance.Condition:Lightly Used but in good working order. I have replaced the display fuse with an upgraded version, which is the biggest issue for this model.Includes a remote control.Has been tested for functionality.This Denon AVR-X1100W is an ideal choice for audio enthusiasts seeking a blend of power, performance, and connectivity in their home theater setup.

Experience the ultimate home entertainment with the Denon AVR-X1100W 7.2 Channel Full 4K Ultra HD A/V Receiver. This high-quality receiver offers a range of audio inputs and outputs, including Digital Coaxial RCA, USB, and HDMI, to ensure you can connect to all your favorite devices. With 9.2 channels and a range of surround sound formats, including DTS-HD Audio Master, Dolby TrueHD, Dolby Pro Logic II, Dolby Atmos, DTS-ES, DTS 96/24, Dolby Digital EX, and Dts Digital Plus, you can enjoy your favorite content in the best possible audio quality. The Denon AVR-X1100W also features a radio tuner and audio outputs such as a headphone jack, stereo L/R RCA, and banana speaker jacks. Whether youre watching your favorite movies or listening to your favorite music, this A/V receiver is the perfect addition to your home entertainment system.

For Sale: Denon remote control model RC-1189. This is a Genuine Original Denon Remote. Not an aftermarket unit. This remote has been fully cleaned and tested. It is in like new condition with no signs of wear. Sale includes the battery cover. Sale does not include batteries. Please do your own research and make sure this is the remote you need before ordering. Buy with confidence. With over 40 years of experience as a professional consumer electronics technician I know what is good and what is not. I only sell quality, working and tested units.This remote control is used but it is guaranteed to perform as mentioned in the listing. We ship to the USA and internationally through eBays global shipping service, to the confirmed address upon checkout. Please email me with any questions and thanks for looking.

CONDITION: Lightly used (no scratches) and in good working order Elevate your home entertainment experience with the Denon AVR-X1100W 4K 7.2-Channel A/V Receiver. This powerful device boasts 72 watts of power and features a digital tuner, internet/media streamer, and various audio inputs including AUX, USB, and AM. Enjoy high-quality sound with DTS-HD Master Audio and Dolby TrueHD surround sound formats. Stream your favorite music using WiFi, Spotify or AirPlay from your mobile device. The sleek black receiver is a perfect addition to any home audio setup. Get ready for an immersive audio experience like no other with the Denon AVR-X1100W. Equipped with both Wi-Fi and Bluetooth wireless technologies, the AVR-X3100W AV receiver lets you listen to your favorite tracks from your portable audio player, smartphone and tablet, as well as from your home network. Choose from a wide range of Internet radio stations, and listen to your favorite tracks from music streaming services. You can also listen to tracks on your computer, and the AVR-X3100W is equipped with dual RF antennas for maximum Bluetooth and Wi-Fi reception quality.NetworkingAirPlay, Bluetooth, Wi-FiNumber of Channels7.2 ChannelSupported Sound CodecDTS-HD Master Audio, Dolby TrueHDAudio D/A Converter24 Bit / 192 kHzAudio System TypeAV ReceiverGeneralClock FeaturesSleep TimerDepthDepth: 13.3 inFeatures3D Ready, HDMI, Surround Sound, With 3D Technology, With DLNA, With Digital Sound Processor, With Fluorescent Display, With Optical Digital Input, With Optical Digital Output, With System Sleep Timer, With Video UpscalingHDMI Pass-throughUp To 4kHeightHeight: 5.9 inIncluded AccessoriesAuto Calibration Microphone, Remote ControlInput Sensitivity200 mVReceiver TypeAV ReceiverStreaming ServicesSpotify, VtunerWeightWeight: 18.96 lbWidthWidth: 17.1 inAudio SystemAV Audio FunctionsAV Network Receiver, Digital Player, Internet RadioFrequency Response20-20000 HzInput Impedance47 kOhmSound Output ModeSurround SoundRadioRadio TypeRadio Tuner- AM/FM- DigitalRDS FunctionPS

Der Denon AVR-X1100W ist ein leistungsstarker 7.2 Kanal AV-Receiver mit einer Ausgangsleistung von 1100 Watt. Er bietet zahlreiche Audioausgänge wie 2x digital optisch und 2x 2,0 Tulpe analog. Mit seiner schwarzen Farbe fügt er sich nahtlos in jedes Heim-Audio-Setup ein und lässt sich dank der mitgelieferten Fernbedienung bequem steuern. Der Receiver ist kompatibel mit Kabeln und verfügt über 4 Eingänge, die eine einfache Verbindung mit verschiedenen Geräten ermöglichen. Ein besonderes Highlight ist die digitale Technologie, die ein unvergessliches Klangerlebnis garantiert. Der Denon AVR-X1100W ist ein erstklassiger AV-Receiver, der in Sachen Leistung und Funktionalität überzeugt. Voll funktionsfähig Tierlos Nichtraucher

Immerse yourself in high-quality audio with the Denon AVR-X1100W, a versatile 7.2-channel AV receiver known for its exceptional performance. Offering built-in Wi-Fi and Bluetooth, this receiver allows for easy wireless streaming and integration with popular music services. Its impressive features deliver powerful and detailed sound for movies, music, and games.Key Features:Powerful Performance: 7 channels, each providing 95 watts at 8 ohms or 145 watts at 6 ohms, ensuring powerful and controlled sound.Advanced Connectivity: Equipped with Wi-Fi, Bluetooth, and AirPlay for wireless streaming, plus a USB port for direct device connection.High-Quality Audio: Supports DTS HD Master, Dolby TrueHD, and Audyssey MultEQ XT for optimal sound quality.Video Capabilities: 4K Ultra HD 60Hz pass-through, 4:4:4 Pure Color sub-sampling, and compatibility with 3D content.Multi-Room Audio: Features two multi-room zones, allowing different audio sources to be played in different rooms simultaneously.Easy to Use: User-friendly setup with an on-screen guide and hybrid GUI.Eco Mode: Energy-efficient with a real-time power consumption Eco meter.Dual Subwoofer Outputs: Connect two subwoofers for enhanced low-frequency performance.Condition:Lightly Used but in good working order. I have replaced the display fuse with an upgraded version, which is the biggest issue for this model.Includes a remote control.Has been tested for functionality.This Denon AVR-X1100W is an ideal choice for audio enthusiasts seeking a blend of power, performance, and connectivity in their home theater setup.

For Parts - Denon AVR-X1100W Ultra HD A/V Receiver 4K 7.2-Channel #FP4562 (HK) AS/IS / FOR PARTS OR REPAIR / NO RETURNS ACCEPTED Cosmetic Condition: Scratches and scuffs on the surface, some marks and nicks on the body. Missing one knob. We are a reseller of this product, and not the products manufacturer. This product is not covered by manufacturer warranty and therefore does not get manufacturer service assistance. This product covered by seller 30 day warranty. This item is sold under the First Sale Doctrine Copyright Law Title 17 Chapter 1 113 Functional Condition: Tested.For Parts - Digitizer doesnt work. Included: Receiver with 2x antennas Not Included: No original box,manual,cables, remote, or any other accessories. You will get what is shown on the pictures Payment: PAYPAL with confirmed addresses only. Payment is due within 3 days of the close of the sale. Ohio residence may be subject to 7.5% tax. Shipping: Orders are shipped Monday through Saturday. If you live in Alaska, Hawaii, Puerto Rico or any US Territory, please email us for shipping quote. Shipping is not always free to these locations . We will send you a message with the quote and you need to respond the same day as we have 1 day handling time, otherwise we will have to cancel the order. We are offering international shipping via eBays Global Shipping Program The buyer can eBay message us for an international shipping quote. We dont ship large items to PO Box addresses, if you are buying something large and heavy from us , please provide us your street address. We dont always ship for free to APO addresses. Returns: Returns arent accepted!!! Feedback: Please let us know if you have a problem with your order/item before leaving negative feedback. 100% Customer satisfaction is our #1 Goal. If you are satisfied with your purchase, please leave positive feedback. Customer Service: PLEASE use eBay messages for communication, do not send emails. eBay messages are checked frequently and a response will be given ASAP.

CONDITION: Lightly used (no scratches) and in good working order Elevate your home entertainment experience with the Denon AVR-X1100W 4K 7.2-Channel A/V Receiver. This powerful device boasts 72 watts of power and features a digital tuner, internet/media streamer, and various audio inputs including AUX, USB, and AM. Enjoy high-quality sound with DTS-HD Master Audio and Dolby TrueHD surround sound formats. Stream your favorite music using WiFi, Spotify or AirPlay from your mobile device. The sleek black receiver is a perfect addition to any home audio setup. Get ready for an immersive audio experience like no other with the Denon AVR-X1100W. Equipped with both Wi-Fi and Bluetooth wireless technologies, the AVR-X3100W AV receiver lets you listen to your favorite tracks from your portable audio player, smartphone and tablet, as well as from your home network. Choose from a wide range of Internet radio stations, and listen to your favorite tracks from music streaming services. You can also listen to tracks on your computer, and the AVR-X3100W is equipped with dual RF antennas for maximum Bluetooth and Wi-Fi reception quality.NetworkingAirPlay, Bluetooth, Wi-FiNumber of Channels7.2 ChannelSupported Sound CodecDTS-HD Master Audio, Dolby TrueHDAudio D/A Converter24 Bit / 192 kHzAudio System TypeAV ReceiverGeneralClock FeaturesSleep TimerDepthDepth: 13.3 inFeatures3D Ready, HDMI, Surround Sound, With 3D Technology, With DLNA, With Digital Sound Processor, With Fluorescent Display, With Optical Digital Input, With Optical Digital Output, With System Sleep Timer, With Video UpscalingHDMI Pass-throughUp To 4kHeightHeight: 5.9 inIncluded AccessoriesAuto Calibration Microphone, Remote ControlInput Sensitivity200 mVReceiver TypeAV ReceiverStreaming ServicesSpotify, VtunerWeightWeight: 18.96 lbWidthWidth: 17.1 inAudio SystemAV Audio FunctionsAV Network Receiver, Digital Player, Internet RadioFrequency Response20-20000 HzInput Impedance47 kOhmSound Output ModeSurround SoundRadioRadio TypeRadio Tuner- AM/FM- DigitalRDS FunctionPS

Denon AVR-X1100W AV Receiver with HDMI FOR PARTS. Untested. Unit powers on then immediately powers off.

Immerse yourself in high-quality audio with the Denon AVR-X1100W, a versatile 7.2-channel AV receiver known for its exceptional performance. Offering built-in Wi-Fi and Bluetooth, this receiver allows for easy wireless streaming and integration with popular music services. Its impressive features deliver powerful and detailed sound for movies, music, and games.Key Features:Powerful Performance: 7 channels, each providing 95 watts at 8 ohms or 145 watts at 6 ohms, ensuring powerful and controlled sound.Advanced Connectivity: Equipped with Wi-Fi, Bluetooth, and AirPlay for wireless streaming, plus a USB port for direct device connection.High-Quality Audio: Supports DTS HD Master, Dolby TrueHD, and Audyssey MultEQ XT for optimal sound quality.Video Capabilities: 4K Ultra HD 60Hz pass-through, 4:4:4 Pure Color sub-sampling, and compatibility with 3D content.Multi-Room Audio: Features two multi-room zones, allowing different audio sources to be played in different rooms simultaneously.Easy to Use: User-friendly setup with an on-screen guide and hybrid GUI.Eco Mode: Energy-efficient with a real-time power consumption Eco meter.Dual Subwoofer Outputs: Connect two subwoofers for enhanced low-frequency performance.Condition:Lightly Used but in good working order. I have replaced the display fuse with an upgraded version, which is the biggest issue for this model.Includes a remote control.Has been tested for functionality.This Denon AVR-X1100W is an ideal choice for audio enthusiasts seeking a blend of power, performance, and connectivity in their home theater setup.

Denon AVR-X1100W AV Receiver with HDMI FOR PARTS. Untested. Unit powers on then immediately powers off.

Keine Rcknahme keine Garantie so wie auf denn Bildern zu sehen die Sachen sind Gebraucht aber meist alles ok Kann das Gert leider nicht testen deswegen Verkaufe ich es als defekt fr Bastler Der eine Fu ist auf jeden Fall Defekt das ander kann ich nicht sagen weil ich nicht testen kann deswegen als defekt fr Bastler

Immerse yourself in high-quality audio with the Denon AVR-X1100W, a versatile 7.2-channel AV receiver known for its exceptional performance. Offering built-in Wi-Fi and Bluetooth, this receiver allows for easy wireless streaming and integration with popular music services. Its impressive features deliver powerful and detailed sound for movies, music, and games.Key Features:Powerful Performance: 7 channels, each providing 95 watts at 8 ohms or 145 watts at 6 ohms, ensuring powerful and controlled sound.Advanced Connectivity: Equipped with Wi-Fi, Bluetooth, and AirPlay for wireless streaming, plus a USB port for direct device connection.High-Quality Audio: Supports DTS HD Master, Dolby TrueHD, and Audyssey MultEQ XT for optimal sound quality.Video Capabilities: 4K Ultra HD 60Hz pass-through, 4:4:4 Pure Color sub-sampling, and compatibility with 3D content.Multi-Room Audio: Features two multi-room zones, allowing different audio sources to be played in different rooms simultaneously.Easy to Use: User-friendly setup with an on-screen guide and hybrid GUI.Eco Mode: Energy-efficient with a real-time power consumption Eco meter.Dual Subwoofer Outputs: Connect two subwoofers for enhanced low-frequency performance.Condition:Lightly Used but in good working order. I have replaced the display fuse with an upgraded version, which is the biggest issue for this model.Includes a remote control.Has been tested for functionality.This Denon AVR-X1100W is an ideal choice for audio enthusiasts seeking a blend of power, performance, and connectivity in their home theater setup.

Denon AVR X1100W zu verkaufen. 7.2-Kanal-Netzwerk-A/V-Receiver mit WLAN und Bluetooth. Der Receiver funktioniert einwandfrei, jedoch werden ltere Denon Receiver von Spotify nicht mehr untersttzt. In Originslverpackung mit Zubehr. Privatverkauf unter Ausschluss jeglicher Gewhrleistung, Garantie und Rcknahme