Headphone Amplifier, Ne5532 20Db Stereo Sound Phono Preamplifier With, Parties How to Use: Product Features [UNIQUE DESIGN] Unique power switch button design is very easy to use. You can enjoy high quality music with headphones through the 3.5mm headphone output, and the line output and AUX headphone output can be output at the same time. [MULTI COMPATIBLE] Compatible with most low volume sound sources such as phones, TVs, MP3 players, portable CD players, computers, video games, etc. and boosts their output to the level needed to drive amplifiers or speakers. [HIFI SOUND] NE5532 op amp with pluggable socket design, easy to replace other op amps to enjoy different sounds, bringing a lot of DIY fun for audiophiles. High quality sealed potentiometer, wide frequency band, excellent dynamic response. [COMPACT AND ] Compact shape, exquisite appearance, compact all metal design, , can block electronic equipment from electromagnetic interference and noise suppression. sound, warm and delicate, ultra low distortion. [WIDE APPLICATION] Perfect size and functional design for home stereo systems, console or speaker setups, karaoke, recording, parties, live stage events and many other scenarios to increase output levels. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!