Beyerdynamic DT 770 PRO 80 Ohm Over-Ear Studio HeadphonesThe Beyerdynamic DT 770 PRO is a closed dynamic headphones of exceptional quality suitable for the most demanding professional and audiophile applications. The long term comfort and accurate performance make the DT 770 PRO the perfect monitoring headphones for recording studios, post production or broadcasting situations. The low MC and diaphragm assembly produce a transient performance equaled only by electrostatic earphones, and, in combination with a carefully tailored frequency response offer a natural and balanced sound. ConstructionThe robust spring steel headband ensures a secure fit for the wearer. Soft earpads and adjustable, sliding, earpieces together with a single sided connecting cable ensure listening comfort during extended periods of use. The DT 770 PRO features 80 Ohm drivers and a gold-plated 3.5mm stereo jack with 1/4-inch inch adapter, and is therefore suitable for use with almost all headphone amplifiers. The single-sided cable allows the headphones to be put on and taken off frequently without cables getting tangled. FocusProAudio Compact 4-Channel Stereo Headphone Amplifier with DC 12V Power AdapterLooking for a compact and portable headphone amplifier that can provide high-quality sound without any noise feedback? The FocusProAudio Compact 4-Channel Stereo Headphone Amplifier is the perfect solution for you. It allows up to four people to listen to the same audio source with independent volume controls. Benefits and FeaturesThis headphone amplifier features four independent channels with separate volume controls, stereo input and output, non-skid foam feet, a durable steel chassis, and a power indicator. It includes a DC 12V Power Adapter, so you don't have to worry about buying a separate power supply. Versatile UsesWhether you're recording in a professional or home studio, creating a podcast, playing video games, or performing live on stage with a choir, this headphone amplifier can make simultaneous listening effortless. It is also easy to connect to all kinds of audio sources, including laptops, televisions, smart phones, MP3 players, mixers, and more! Easily plug in and play! The FocusProAudio Compact 4-Channel Stereo Headphone Amplifier has a straightforward interface with five ¼ inch audio jacks in the front - one for audio input and four separate jacks for connecting different pairs of headphones. Next to these jacks is a 12-volt DC power connection for the included power adapter. With its practical design and no-frills connectivity, the FocusProAudio Compact 4-Channel Stereo Headphone Amplifier is easy to set up and use, making it an excellent choice for your home studio or audio setup. | beyerdynamic DT 770 PRO 80 Ohm Over-Ear Studio Headphones with Stereo Amplifier Bundle in Black