Koss Porta Pro KTC (w/buttons, mic) for $38

If like the retro-glamo(u)r of the Koss Porta Pros, to feed your Stranger Things Season 2 nostalgia, but you just can’t live without the remote/mic, then you are in luck, the Koss Porta Pro KTC with the MFi (made for iPhone/etc) 3-button remote/mic [functions (PDF)] is on sale for $38 with free shipping at Amazon by Amazon actual with a limit of up to three units per customer at the sale price.

Keep in mind these are open! They average 3.8 out of 5 based on 200+ customer reviews. If you want more reviews, there are over 3300 of them on the listing for the classic Porta Pro without the buttons which averages 4.4 out of 5. This is now available for $42 in not just the classic blue-styled color, but also the all-black color. So you can be retro without being nostaglia-retro 🙂

Used Koss QZ-99 Closed Over-Ears for $23

The Koss QZ-99 closed-back over-ear headphones with a mono/stereo switch go for around $40 in new condition at the moment, but you can cut the price almost in half by going used, you can get them in “Used – Very Good” condition for $23~ by Amazon Warehouse Deals. They average 4 out of 5 based on 260+ customer reviews at Amazon.

Koss KSC21 SportClip Clip-Ons for $6

Clip-on time! The new condition Koss KSC21 SportClip Clip-Ons are on sale for the very specific price of $6.24 with a limit of up to three pairs per customer during this sale at Amazon by Amazon actual where they average 3.7 out of 5 based on 150 customer reviews. Shhhh! This is not an Add-ON item, so Prime members get free 2-day shipping even with one pair. Non-Prime members need the usual $25+ minimum order for free shipping.

These should not be confused with their more famous cousins, KSC-75 Clip-Ons which are also on sale for $11.70 each, with a limit of three per customer and they average 3.9 out of 5 based on 2500 customer reviews. Note the that KSC-75 are open-back even though they are clip-ons 🙂

Koss KSC75 Clip-Ons for $11.70 [limit 3]

They are on sale! These goofy but highly praised Koss KSC75 clip-on open-back earphones are on a rare sale, going for $11.70, in new condition, at Amazon by Amazon actual with a limit of up to three pairs per customer.

They average 3.9 out of 5 based on nearly 2500 customer reviews, and have almost 50 questions answered, but keep in mind, some of the negative reviews are because people don’t understand what open back means 🙂 I picked up a pair of these during a sale a while back at a B&M store, but I’m “saving them” for an unboxing post before I use them 🙂

Free shipping for Prime members or with a $25+ order.

This sale ended: If you are going to have a $25+ order, you may also be interested in the official Koss 6-pack (three pairs) of replacement ear cushions going for $3.80. These are limit three sets per customer and they are an ADD-ON item, thus the $25+ order minimum.

[DEAD] 6pk of Koss Portable Replacement Cushions for $3.80

As of a 9/16/17 recheck, the price went up to $6+, but at least they are no longer an ADD-ON item…

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[DEAD] Used Koss QZ-99 Headphones w/On-Cup Volume Control for $22

As Star Trek TNG has taught us, all good things come to an end… As of 9/11/17 recheck, this sold out in USED condition…

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Used Koss HB79 Stereophone System Wireless (Infrared) for $12

Among the latest Amazon Warehouse Deals Bargain Bin clearance sales, you can get in “Used – Good” condition (cosmetic imperfections; missing user manual; damaged original packaging) the Koss HB79 Stereophone System Wireless for $12.10. Free shipping for Prime members or with a $25+ order. It averages 3.3 out of 5 based on 50+ customer reviews. It goes for $40+ in new condition.

NOTE: this uses Infrared (wireless) technology. Not bluetooth. It comes with a headset and a transmitter/base. Check reviews and answered questions for more details as the product description is rather spartan.

Koss Pro-3AA Closed Over-Ears for $50 w/free S&H

Coupon code ACC17 (previous coupon was HEADLINER) drops the price of the new condition Koss Pro-3AA closed-back over-ear headphones from $54.45 to $49 with free shipping at Musician’s Friend. Coupon expires 8/25/17.

A close price is $52 at Amazon by Amazon actual with a limit of up to two units per customer.

Heads Up (Thursday 9am ET): Koss Porta Pro X for $39 at Massdrop

Come listen to our dairy aire on Thursday 8/10/17 at 9am eastern 😉 Koss joins the Massdrop exclusives party on Thursday at 9am ET with the Koss Porta Pro X, based on the good old Koss Porta Pro. The price will be $39. Shipping information has not been revealed yet. Unlike the OG Porta Pros models, this one has a single but multi-functional button that is also a giant Massdrop logo 🙂

Used Koss BT540i Bluetooth Over-Ears for $59

The new condition closed-back over-ear KOSS BT540i bluetooth headphones go for $150+, but you can shave almost 2/3rds of that price if you go used. There are multiple “Used – Very Good” listings of this going for $59 by Amazon Warehouse Deals actual. These are “cosmetic imperfection” units with damaged original packaging. They average 4.1 out of 5 based on 50 customer reviews.

Koss ESP-950 Electrostatic Stereophone for $625

Come on Barbie, let’s have an Electrostatic Party! Mayhaps I need to start a Patreon where people can donate to block me from repeating jokes like this one 😉 Regardless, the new condition Koss ESP-950 Electrostatic Stereophone is on sale again, going for $625 with free shipping by Amazon actual. Limit one unit per customer at the moment. This is a system, you get the headphone and matching amp, unlike most headphones out there.

Koss KSC21 SportClip Clip-On for $6 [limit 3]

Clip-on action now, the new condition Koss KSC21 SportClip are on sale for the very specific price of $5.89 at Aamzon by Amazon actual with a limit of up to three units per customer. Despite the low price, they are not an ADD-ON item, so if you are a Prime member, you get free 2-day shipping with just one pair of these They average 3.8 out of 5 based on 117 customer reviews.

PS: this should not be confused with the more famous clip-ons, the Koss KSC-75.

Koss KDE250 Earphones for $100 + S&H [MD]

This defy conventional categorization, are they earbud-speakers or headphones with a mini earcup or earphones in the true sense of the word? We’ll let the various subcommittees debate this while Massdrop offers the Koss KDE250 Earphones for $100 plus shipping. The offer runs for the next seven days with an early May shipment estimate. This too is an “all sales final” promotion.

Koss ESP-950 electrostatics for $643 [was $600]

This looks like it could be a computer-generated price-match of a marketplace seller, so I don’t know how long it may last. Anyway, the new condition KOSS ESP-950 electrostatic headphone system is (headphones with dedicated amp) are on sale for $643 [WAS $600] with free shipping  at Amazon by Amazon actual. You can buy as many as you like.

UPDATE: used prices start at $471 in “Used – Very Good” condition by Amazon Warehouse Deals actual.

Prices updated here 3/23/17 PM

Koss Pro4S Full Size headphones for $108

The closed-back over-ear Koss Pro4S Full Size headphones with actual studio features (dual choice entry, pass through) is on sale for the very specific price of $107.64 at Amazon by Amazon actual with a limit of up to three units per customer. They average 4.5 out of 5 based on 56 customer reviews.

Speaking of Koss, Koss has an Amazon store and through that, they offer two limited edition colors of the good old Koss PortaPRO for $60, the Black Gold (I call “The Bee”) and the Rhythm Beige. These are fulfilled by Amazon, so you get them in around two days if you are a Prime member.

Koss KDE250 Earphones for $108 [MD]

Back at Massdrop (MD), the Koss KDE250 Earphones are fully unlocked for $100 plus $8~ flat shipping, with seven days to go on this offer. This offer ends at the end of the month and will be shipped by MD.

Koss BT540i bluetooth over-ears for $113

Koss time! Come smell listen to our dairy treble air! The new condition Koss BT540i bluetooth over-ears are currently on sale for $113~ with free shipping at Amazon by Amazon actual with up to three units per customer. They average 4 out of 5 based on 41 customer reviews. A Koss-branded case is included… Optionally you can add a FREE “Smart Home Consultation” to the shopping cart (whatever that is, but it’s free)…

[DEAD] Koss ESP-950 Electrostatics for $595

This Saturday lightning deal expired…

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[DEAD] Starts Saturday 2:54pm ET: Koss ESP-950 Electrostatics Sale

Saturday is over, and so are its lightning deals…

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Massdrop unlocked: Koss KDE250 for $108 and more

More offers have been unleashed and unlocked at the members-only Massdrop, starting with the unconventional-looking Koss KDE250 earphones (earphones is probably the best way to describe them, in-ears or earbuds don’t quite fit them) going for $100 plus $8~ flat shipping. They run for the next eight days with a late February 2017 shipping estimate (good thing February is a short month then!).

With the same expiration date and similar shipping estimate, but a decidedly more conventional in-ear look, the NuForce Primo8 are going for $130 plus $4~ flat shipping.

Last but not least, it’s the return one of their regular bang-for-the-buck headphones, the closed-back over-ear AKG K553 PRO go for $120, and will ship early February 2017. This offer runs for the next five days.

Koss PortaPro Limited Edition are now Prime eligible

If you are a fan of free 2-day Prime delivery, the new Limited Edition Koss Portapros are now available for $60 with free 2-day Prime-shipping (for Prime members) at Amazon. The seller is Koss’s Amazon store with the order fulfilled by Amazon. They are available in the Rhythm beige or the more colorful Rhythm Bee (official name is “Black Gold”).

Unlike the original PortaPro, these have a mic and a volume slider on the cable. See gallery pictures #1 and #4 over there.

Speaking of Portapros, the 6-pack of replacement cushions goes for $3.54 with a limit of three sets per customer but it is an Add-On item, so you must needs place a $25+ order to buy them.

Koss ‘The Plug’ In-Ear for $8.28 [limit 3]

The black color scheme of the Koss ‘The Plug’ In-Ears are currently on sale for $8.28 at Amazon by Amazon actual with a limit of up to three per customer. They are not Add-on items as of the time of writing, so free 2-day shipping for Prime members. The other colors go for more. All the colors together average 4.2 out of 5 with nearly 950 customer reviews.

Koss KTX-PRO1 Open Portable On-Ears for $10

The open-back portable on-ear Koss KTX-PRO1 with built-in volume control on the cable are on sale in new condition for just $10, with a limit of up to three units per customer, at Amazon by Amazon actual. This is not a lightning deal, so expiration date is unknown.

Koss KPH7 lightweight on-ears for $4.88 w/free S&H

In this blog we cover all ends of the price spectrum, from the $4000 Focal Utopia (currently in-stock) to the $5 Koss KPH7 feather-weight on-ears, currently on sale for $4.88 with free shipping by Digital Kynect Online on eBay (99.6%) with a limit of up to 100 per customer. Over 2200 units have been sold. It ships from the USA but does not say from which state. However, they collect sales tax in Texas per the eBay listing, so that may (or may not) be a clue…

The benefit of this offer is you can buy one pair of headphones and get free shipping, unlike orders fulfilled by Amazon which typically require a $25+ purchase when these are in the $5-ish and below range… You can check the Amazon listings but beware of low-rated sellers offering them with direct shipping (not Prime eligible).

Used Koss ESP-950 Electrostatic for $552 [updated]

The Koss ESP-950 electrostatics go for $650 in new condition, but if you are comfortable with used, you can get them for $519 in “Used – Very Good” condition (this sold out as of a 12/3/16 recheck) for $552 in “Used – Like New” condition, both by Amazon Warehouse Deals actual. The former has minor cosmetic imperfections, which is probably why it has a lower used rating.

Koss ESP-950 Electrostatics for $649 [limit 5]

I promised I would stop saying this too (“Come on Barbie, let’s have an Electrostatic Party!”) but apparently I can’t help myself 🙂 The new condition Koss ESP-950 Electrostatic Stereophone is back on sale again, going for $649 with free shipping at Amazon by Amazon actual with a limit of five units per customer.

Koss KSC75 Earclips for $11.75 [limit 3]

In a sale paralleling the PortaPros, the clip-on KSC-75 cliphones are down to $11.75 with a limit of three per customer, in new condition, at Amazon by Amazon actual. As with other Koss models, they have a limited lifetime warranty… Check the Koss listings to see if any other models are on sale as well…

Koss PortaPro for $26 [limit 3]

If you don’t want to wait for further discounts, as of the time of writing, the good old Koss PortaPro, in new condition, is on sale for the very specific price of $26.09 at Amazon by Amazon actual, with a limit of three units per customer. Note that this is open-back, despite it’s porta(ble)-compact-ness 🙂

Koss PortaPro On-Ears for $29

If you don’t want to wait for Holiday shopping season doorbusters (according to my records aka “order history”, this went for $20 in late 2014 during a lightning deal), the new condition Koss PortaPro retro-retro open-universe on-ear headphones go for $29 at Amazon by Amazon actual (limit 5; usual free S&H terms) and $30 with free shipping for all (not sold in stores) at the Target website.

At Amazon, these average 4.5 out of 5 based on 3170+ customer reviews and have 90 questions answered. I haven’t looked at the negative reviews, I’m assuming some of them didn’t read the “open back” part and are complaining about open-related issues when they needed closed headphones. But I’m digressing 🙂

Koss KPH7 lightweight on-ears (black) for $5 w/free S&H

More eBay action, this one is of interest if you like free shipping regardless of purchase amount or membership status, the new condition black color scheme of the Koss KPH7 lightweight old-school on-ears are on sale for $5 with free shipping with a limit of five units per buyer by Digital Kynect Online (99.7%, US based but does not say where they ship from)… If you need more, a couple of marketplace sellers offer them for the same price thru Amazon (not Prime eligible)…

Koss PortaPros drip-drop to $33.88 [limit 5]

The Koss PortaPros are f00kin legends in a retro kind of way, and if you can’t wait for a future discount or holiday season lightning deal, they have drip-dropped in price a bit at the moment, you can get them for $33.88 in new condition, with a limit of five units per customer at Amazon by Amazon actual. Two more marketplace sellers offer them for the exact same price, so it may be that Amazon automatically price-matched them. So pay attention to who the actual seller is. Look for Amazon’s own listing:

koss_portapro_amzn

Koss KPH7B Lightweight On-Ears for $5 [limit 5]

On the lightweight-to-featherweight front, the blue color scheme of the Koss KPH7B On-Ears is on sale for under $5 at Amazon by Amazon actual and it is currently NOT an Add-On item, so if you are a Prime member, even if you only buy one pair, you still get free 2-day shipping. Limit five per customer… Of the other colors, the lime-green has a similar price but it is designated an Add-On Item… As a group, all the colors together average 3.9 out of 5 based on nearly 800 customer reviews and have 60+ questions answered…

Koss PRO 4S Studio Headphones drop to $80

Another Koss discount, this time it is the new condition Koss PRO 4S Studio headphones down to $80~ with free shipping, with a limit of five units per customer at Amazon by Amazon actual where they average 4.6 out of 5 based on just 27 customer reviews. They dual-entry with your choice of left or right.

[DEAD] Used Koss ESP-950 Electrostatic Stereophone for $522

As of a 9/17/16 1:21pm ET recheck, the used option at $522 is gone. The lowest price is $800 in new condition by marketplace sellers at Amazon

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6pk Koss Portable Replacement Cushions for $3

If you are planning a present or near-future order at Amazon of $25+, the 6pk of Koss Portable Replacement Cushions (good for multiple models including PortaPros and KSC-75) is down to $3 per 6pk at Amazon by Amazon actual with a limit of five sets per customer. The catch is that they are an Add-On item, so you must place a $25+ qualifying order, otherwise the shopping cart will refuse to let you buy them.