Spectral Headphones Second hand, modified and refurbished headphones in excellent condition! About Spectral Headphones Welcome to my online shop! Here you will find mostly analog headphones from all ages and manufacturers clean and in their best possible condition! If you have any question, feel free to look into the FAQ at the end of the description or send me a message otherwise. Product description: For sale is a Sennheiser HDI 434 infrared headphone. From my research, these seem to be worth quite a lot of money, but I cannot say anything about the acoustical qualities of it. It is probably more of a collectors object than anything. It also could need some new ear pads that have to be attached in some way if its bought for actual use. Since I do not have a base station for this headphone, I cannot test it for functionality and therefore have to sell it as defective. It might actually be perfectly fine, but since it is sold as a defective item, it does not come with any form of warranty in this case. Specifications: Impedance: - Construction: on ear(?) - closed back(?) Driver type: dynamic What has been renewed?: ... Modifications: ... Additional info and things to note: ... FAQ 1. How, when and to what locations do I ship? All orders will be shipped well packaged with DHL to all countries in the EU after ~1-2 days. Shipping to places outside of the EU is currently not possible for me. 2. Why would you buy something at Spectral Headphones? In terms of used headphones, especially when it comes to older models, the chance of undeclared defects by private, but also a lot of business sellers is sadly rather high. Damaged drivers, loose contacts, missing parts, unusable mechanisms (especially with AKG), smoke stench and completely disastrous hygienic conditions are very common in reality. With no exaggeration, at least 25-35% of all used headphones I purchase for refurbish possess one or more undeclared technical defects that are only possible to fix with specific knowledge and / or specialized spare parts. I want to offer products that can be ordered with no worries and arrive clean, fully working and ready to use at your home! 3. What are the criteria for choosing correct ear pads? For the selection of ear pads, the wearing comfort as well as a minimum (negative) impact on the sound quality / characteristics are the most important aspects. The selection of matching ear pads for a wide variety of different models is a very time- and cost intensive task and should absolutely not be underestimated when it comes to restoring headphones. The correct set of ear pads is responsible for half of the entire acoustic performance. 4. In which cases will I use original parts? Depending on the type of issue / replacement, availability and economic sustainability I will decide for or against the use of original parts. Often their cost is completely unreasonable compared to the total selling price of the headphone and I would need to ask for double the price for some products. Most of the time I will use high quality third-party parts or custom manufactured spare parts for repair and restoration, which also results in a high quality final product. If something doesnt meet my quality standards, it will not be offered for sale. 5. Who is responsible for the return shipping cost? In case of technical problems or transport damage the seller (me) is responsible for the shipping cost. A lot of issues can possibly also be fixed without the need to return it for repair. In this case I am of course ready to help you! In case of a return with no warranty background in the 14-day window after arrival, the buyer is responsible for the shipping costs back, including a tracking number. ------ Since I am a small business seller under German law, my items currently do not inherit any VAT (but are of course still all import-fee-free in EU-countries). Gemäß Abschnitt 19 Abs. 1 UStG ist im Rechnungsbetrag keine Umsatzsteuer enthalten (Kleinunternehmerregelung). Spectral Headphones