iFi iEMatch 2.5 mm Male to Female Headphone Jack In-Ear-Monitor Audio Amplifier/Optimizer/Attenuator. Includes Soft Foam Ear Plugs, Travel Pouch, and Airplane Adapter

• ✅ AUDIO OPTIMIZER - iEMatch 2.5mm to 2.5mm is a sound attenuator. It allows you to hear optimized sound at amplified and lower volume levels. It reduces the hiss, pops, and background noise that distracts from your music (nearly zero output impedance). The iEMatch restores the bits of resolution that are lost at regular/low digital volume.
• ✅ SAVE YOUR EARS - Instead of blasting music to hear a little more sound, the amplifier expands the volume range where you can hear clear audio on lower volumes (boosts dynamic range). Many amplifiers work only with full power over the ear headphones, but iEMatch are also great for in-ear-monitors (IEMs), custom earbuds, or in-ear headphones.
• ✅ BALANCED SOUND -The iEMatch has a balanced 2.5 outputs with the TRRS jack on both ends. Switch between High or Ultra Sensitivity to match your headphones. Works great as an analog sound adapter for cassettes and CD players.
• ✅ HEAR MORE MUSIC - Connect directly to an audio source or place the iEMatch between DACs and Amps. The gold-plated 2.5mm balanced connector and 6N silver/copper matrix allow for better signal transfer. Hear all of your music, from the highest soprano to the lowest bass.
• ✅ TRAVEL COMFORTABLY - Adapt sound from airplane in-flight systems, Digital Audio Players (DAP), smartphones, portable players, tablets, computers, and more. Includes a velvet pouch, gold-plated airplane adapter, and memory foam contoured earplugs.

Why iEMatch 2.5mm? The iEMatch 2.5mm is designed to connect between a digital audio player with a 2.5mm balanced output and a 2.5mm headphone jack. When using an audio source that has digital volume control, such as a smartphone, DAP, tablet, laptop, or computer, you loose around two bits of resolution when lowering the volume. It's like watching HDTV with some of the pixels missing from the screen. Since most comfortable listening is around a 60% volume level, you decrease dynamic range and audio quality. Enter iEMatch2.5! It attenuates the volume and safely enables you to crank up the digital volume on your audio player without painful consequences. Unlike common attenuators the iEMatch does not decrease the dynamic range of your headphones and adds less than 3 ohms to the impedance output. The iEMatch removes hiss, restores dynamics, increases transparency, and improves volume range. It is specifically designed for listeners who have dedicated high resolution digital audio players (DAPs), and equipped with a gold-plated 2.5mm connector specific to DAPs and sensitive in-ear headphones. The iEMatch2.5 removes the hiss often present from many digital music sources during headphone playback and lets you to listen without cranking the volume to excessive levels. By allowing you to reduce the volume to more comfortable parameters iEMatch2.5 restores dynamics, increases the transparency, significantly lessens background noise, and boosts the usable volume range . Comprised of aluminum-magnesium alloy and a 6N silver-copper matrix cable iEMatch2.5 lets the signal transfer pass through as it should. It even includes a High or Ultra sensitivity switch to match your headphones. Simply add iEMatch2.5 between your headphones and your DAP, set it to high or ultra sensitivity, sit back, and marvel at how much more music you hear - and how much sound degrading noise and irritating decibels are gone. Just plug, play, and enjoy!