Back in the 70's, these were made in the U.S. All headphones were used with receivers back then. That meant that stand alone headphone amps were not necessary. You could literally suffer hearing damage if you weren't careful. I used to think it was funny getting a friend to put them on and then crank up the volume. They were built tough because they survived being flung across the room with this prank. The old receivers and the fluid filled ear pads these came with produced some very powerful bass. No bass on an old vintage version is likely due to not having the original ear pads these came with. The original earpads would tend to dry out or leak the gel like substance and you would have to replace them to restore the original sound. Now days, these are China made, cost less than they did in the 70's and cannot possibly be the same audio quality of the originals. Just describing the new ear pads reveals this. It would be very difficult to restore an old one to it's original sound because you can't get the original pads for them anymore. Generally, Koss made the best headphones you could buy back then. Now, they are just Walmart variety cheap stuff I wouldn't buy as a stocking stuffer. Koss can't and doesn't try to compete with major headphone manufacturers today. That's not their marketing strategy. They did have some legacy products like the HV-1A (open back), and Pro 4aaa that were a home use version of these with the same driver. I remember the bass being so strong that you could feel it tickle your throat. I've heard nothing like that in modern headphones including planar magnetic. Fluid filled ear pads and old amplifiers were the reason for this.
So how do I take off the ear pads? Do they need to be pried off or do they slide off? Also I ordered the pads you recommended and one reviewer said they were too small😬
Hello , thanks for watching and your questions. The old pads just kinda peel off . Taking the pads off is easy but applying them is a little tricky. But the pad I listed did fit mine . Kinda a tight fit…. But that is needed or they would just slip off . I start the new pad at the top and slide the pad around like a bike tire which is also a tight fit sometimes. If you need more assistance I’ll make a quick tutorial short video if needed . Just Let me know . Thanks .
@@DjMartiniMidwest thank you for the quick response. I just wanted to make sure I’m doing it right. Yes please a tutorial would be awesome if you have the time. Just bought a pair of these. Brand new and never been opened. Still in original box. They look in great shape but for sure I’m assuming the pads need replaced just because how old they are. Thanks again for your time.
@@davidiiiferber2939 awesome, cool find .. I’ll see what i can do for a quick tutorial. In a few days . Let me know what you think of the new headphones. Thanks
I got my pro 4aa set in 2018 new direct from koss. Still use them. Im looking for something new that doesn't weigh so much. Im thinking about trying out beyerdynamic 770s. Do you know anything about them?
Thanks for watching and sharing. I’m not familiar with the 770s but they look great and they have great reviews. So I’m inn! But I’m also a fan of the Sennheiser HD 280 Pro . Thanks .
I have beyer 770 pro. Enclosed. that have a bass port and for me offer both high and low frequencies clearly while being enclosed. I have 2 pairs, an older pair that has vinyl pads, the newer ones have plush type pads. listening to this video i think if you had a choice, you'd definitely go for the beyer. I own dt990 (open) DT770 and DT250 and DT150 and DT100. DT100 are the 'flattest, dullest' sounding. i replaced the cable on my 770 from a straight to a curly cable for preference bit a fauly but it needs a bit of work. the dt100/150/250 however have detachable cables. I use the 770s for broadcast and audio mastering, there's a little leakage around the plush pads so when i am remote contributing, i use the dt150 as they have more sealed vinyl pads. You can get replacements pads of each type.
I have a pair I bought like new in the original box with all paper work from eBay that were made in 1974(made the same year I was born, I'm old lol) for $30, I love them I use them playing guitar through my mesa boogie combo amplifier when the wife bitches about noise, they sound awesome compared to the plastic made in china garbage we have today,
Back in the 70's, these were made in the U.S. All headphones were used with receivers back then. That meant that stand alone headphone amps were not necessary. You could literally suffer hearing damage if you weren't careful. I used to think it was funny getting a friend to put them on and then crank up the volume. They were built tough because they survived being flung across the room with this prank. The old receivers and the fluid filled ear pads these came with produced some very powerful bass. No bass on an old vintage version is likely due to not having the original ear pads these came with. The original earpads would tend to dry out or leak the gel like substance and you would have to replace them to restore the original sound.
Now days, these are China made, cost less than they did in the 70's and cannot possibly be the same audio quality of the originals. Just describing the new ear pads reveals this. It would be very difficult to restore an old one to it's original sound because you can't get the original pads for them anymore. Generally, Koss made the best headphones you could buy back then. Now, they are just Walmart variety cheap stuff I wouldn't buy as a stocking stuffer. Koss can't and doesn't try to compete with major headphone manufacturers today. That's not their marketing strategy. They did have some legacy products like the HV-1A (open back), and Pro 4aaa that were a home use version of these with the same driver. I remember the bass being so strong that you could feel it tickle your throat. I've heard nothing like that in modern headphones including planar magnetic. Fluid filled ear pads and old amplifiers were the reason for this.
Thank you for watching and sharing . Great insight and information.
My grandfather had these in all metal and I remember them being the best they can be but with today's technology
@@1DJSkittles Thanks for watching and sharing.
I just found a pair of these in very good condition at an estate sale. Thanks for the video 😎
Thank you for watching and sharing. Much appreciated.
What do you mean the sound was "flat"? Flat meaning even response across the frequency spectrum? Or "flat" meaning uninteresting or unstimulating?
Thanks for watching and your question . Yes , I meant the headphones were flat across the frequency spectrum. Thank you.
So how do I take off the ear pads? Do they need to be pried off or do they slide off? Also I ordered the pads you recommended and one reviewer said they were too small😬
Hello , thanks for watching and your questions. The old pads just kinda peel off . Taking the pads off is easy but applying them is a little tricky. But the pad I listed did fit mine . Kinda a tight fit…. But that is needed or they would just slip off . I start the new pad at the top and slide the pad around like a bike tire which is also a tight fit sometimes. If you need more assistance I’ll make a quick tutorial short video if needed . Just Let me know . Thanks .
@@DjMartiniMidwest thank you for the quick response. I just wanted to make sure I’m doing it right. Yes please a tutorial would be awesome if you have the time. Just bought a pair of these. Brand new and never been opened. Still in original box. They look in great shape but for sure I’m assuming the pads need replaced just because how old they are. Thanks again for your time.
@@davidiiiferber2939 awesome, cool find .. I’ll see what i can do for a quick tutorial. In a few days . Let me know what you think of the new headphones. Thanks
@@DjMartiniMidwest I have not plugged them in yet due to going out of town. Yes I’ll let you know! Thanks!
I wonder if you can do the same comparison with the porta pros
Thanks for watching and your suggestions. No guarantees .. Maybe a future video but there are a lot of Porta pros models .. 😃
@@DjMartiniMidwest just the regular porta pro and an old one
@@misteuraxe691 One more question a old wired model or a comparison to the new wireless/Bluetooth model ? Thanks
@@DjMartiniMidwest whichever you like, but preferably the wired models
🔥
Thank you for the watch and the feedback! Much appreciated!
I like Stereophone much better than Headphones
Thank you for watching and sharing .
I got my pro 4aa set in 2018 new direct from koss. Still use them. Im looking for something new that doesn't weigh so much.
Im thinking about trying out beyerdynamic 770s. Do you know anything about them?
Thanks for watching and sharing. I’m not familiar with the 770s but they look great and they have great reviews. So I’m inn! But I’m also a fan of the Sennheiser HD 280 Pro . Thanks .
I have beyer 770 pro. Enclosed. that have a bass port and for me offer both high and low frequencies clearly while being enclosed. I have 2 pairs, an older pair that has vinyl pads, the newer ones have plush type pads. listening to this video i think if you had a choice, you'd definitely go for the beyer. I own dt990 (open) DT770 and DT250 and DT150 and DT100. DT100 are the 'flattest, dullest' sounding. i replaced the cable on my 770 from a straight to a curly cable for preference bit a fauly but it needs a bit of work. the dt100/150/250 however have detachable cables. I use the 770s for broadcast and audio mastering, there's a little leakage around the plush pads so when i am remote contributing, i use the dt150 as they have more sealed vinyl pads. You can get replacements pads of each type.
I have a pair I bought like new in the original box with all paper work from eBay that were made in 1974(made the same year I was born, I'm old lol) for $30, I love them I use them playing guitar through my mesa boogie combo amplifier when the wife bitches about noise, they sound awesome compared to the plastic made in china garbage we have today,
Thanks for watching and sharing.. that’s a great find!
😮😮😮😮😮😮