The Sennheiser 599 is an open back headphone that features 50mm drivers, soft and comfortable fit and comes with 2 cables in different lengths. These sell for about $200 new and a little less refurbished.
The Beyerdynamic DT990 Premium is an open back headphone that is tested and loved by music lovers for its open back design, hardshell case and the made in Germany design. These sell for about $200.00
The Audio-Technica ATH-M70x is a closed-back over the ear design that’s tuned for accurate reproduction. The 45mm drivers are ideal for studio mixing, DJing or even listening at home. These sell for about $300.00
The Audio-Technica ATH-M50x is a professional hedaphone that ships with a hardbody case and 2 different cables - both coiled and straight, and feature 45mm drivers that are a reviewers favorite for extended frequency range. These sell for about $170.00
The Sennheiser HD559 is an open back headphone powered by 38mm drivers and ships with a 3 meter detachable cable. These sell for about $100.00
The Audio Technica ATH-R70X is a professional headphone that’s over ear and features cabron composite design, with aluminum accustically transparent housings to provide detailed transient response. Priced at about $350.00, or buy used/refurbished from about $280.00
The Tin Audio T2 by Linsoul is an in ear monitor that features and dual driver design, metal contruction and a MMCX cable connector to allow for cable upgrades in the future. Priced at about $50.00
6 pairs of New Bee replacement foam tips for IEM’s are soft, comfortable and are great from blocking out ambient noise so you can concentrate on your music. Priced at about $7.00. refurbished can be had for about a dollar less.
The KZ ZS10 Pro by Linsoul is a 5 driver IEM with 4 BA and 1 DD drivers that offer more bass, crisper highs and deeper mids. Designed out of stainless steel, these are lightweight yet strong. Priced at about $50.00
Head-Fi is an online forum dedicated to all things headphones. Topics include sources, headphones, for sale groups and more.
The KZ ABS Hard-Sided Multifunction Protective Case for Earphones is a hard case that’s designed to protect your headphones or IEMS when traveling or any other condition where you might want to protect your headphones from dust or damage. Priced approx $10.00 and available in black, green, blue or red.
The Hifiman Sundara is an over the ear headphone that uses planar technology and open back design to give you a fast and detailed sound that only planar headphones can provide. These usually sell for about $350.00 a pair. You might be able to find a refurbished model for a bit cheaper than paying full price.
The Cavalli Tube Hybrid headphone amplifier by Drop is a hybrid desktop tube amplifier with a solid state and tube sections for those that want a warmer sound. Planar headphones like the Hifiman Sundara are a great match for this amp. The Amplifier ships ready to use with a 6922 vacuum tube. This amplifier sells for about $210.00
The OneOdio A70 is a bluetooth over the ear headphone that’s foldable and offers both wired and wireless connectiviety. Memory Foam Pads offer comfort over the 40mm drivers. Priced at about $50.00
The Apple Lightning to 3.5mm headphone jack adapter is one of the only way to be able to listen to all wired headphones so for a lot of this, this little gadget is need and not a want. Good thing they are pried at only about $8.00
The JLab Audio Go Air True Wireless Earbuds offer 5 hours of playtime, with 15 hours from the charging case. You can use each earbud independently of the other and the headphones connect automatically to your device. These sell for about $30.00
A big improvement to a lot of headphone amplifiers is to replace the crappy volume knob with something nicer, like this silver volume knob that costs under $10.00
The Cowin E7 is an active noise cancelling headphone wiht deep bass and 30 hours of playtime. 40mm drivers provide deep bass and are cushioned by protein covered earpads. Priced at about $60.00
The audioquest dragonfly cobalt is a thumbdrive sized USB DAC/Amplifier that features the ESS9038Q2M dac chip with a native 24/96 resolution and the ability to play MQA files.
The AV Exchange is subreddit to buy and sell headphones. Beware - it can become addictive. :)
The Sony MDRZX110 is an on ear headphone from sony that is priced about $19.00
The JDS Labs Element II is a an amp/dac combo with what might be considered the best volume knob ever.
Audio Science Review is a forum for all music lovers that specializes in measuring and discussing amplifiers, dacs, speakers and more.
Apos Audio is an online retailer that sells headphones and accesories from brands like topping, S.M.S.L and more
The S.M.S.L SP200 is a headphone amplifier with THX techology that offers silent backgrounds and both balanced and rca inputs and lots of power for almost any headphone and sells for about $289.00. Refurbished models can sell for just over $200 if you want to save more money on this.
The Status Audio CB-1 is an over the ear headphone that has a msrp of about $80.00 but it’s usually on sale for about $50.00.
The RME ADI-2 DAC is a well reviewed DAC/AMP that sells for about $1200.00
Sennheiser sells headphones for almost every application as well as pro audio tools and more.