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  1. caol ila

    AKG K701 Vs Denon AH D-2000

    You could buy a K601 and get better bass weight than a K701 without sacrificing anything in the midrange, if anything the mids would improve as well.   You could get a DT880 and improve on the D-2000 across the board. Mids would suffer in comparison to the AKG cans. However, your extension...
  2. caol ila

    AKG K 701, Sennheiser HD650 or Beyerdynamic DT880?

    Just get the DT880 and worry about a headamp later. You may learn you don't need one (I do not use one with mine in most cases), but if you decide to get one, you will at least know what aspects to improve.   Don't place too much importance on what others think sounds the best. The DT880 is...
  3. caol ila

    AKG K 701, Sennheiser HD650 or Beyerdynamic DT880?

    The DT880 is well known as a classical and jazz headphone. It is reasonably efficient and has an almost resistive load to the amp, so it is very easy to drive and usually does not require a headamp. The 250 ohm version is the most versatile and will usually work in situations the 600 and 32 ohm...
  4. caol ila

    Benefits of High Impedance Headphones??

    High impedance headphones are for classic tube circuitry that had high voltage but low current delivery.   The transmission line standards in studio settings calls for 600 ohms, and 600 ohm headphones had the maximum power delivery since max power occurs when supply and load impedances are...
  5. caol ila

    speaker amplifier to drive headphones

    Make a proper voltage divider network, add a headphone jack, and you can drive headphones with just about any audio amp that you want to. About the simplest project you could undertake. You can add a switch and tailor it to specific impedances by switching between different voltage divider...
  6. caol ila

    Are there any headphone amps that also work well with speakers?

    You will need powered speakers. Look for some pro audio monitor speakers with built-in amplifiers.   Also, look at pro audio headamps. Benchmark makes some good ones, but if you can find a used AKG HEARO 999 Audiosphere II like I have, then you have a headamp, wireless amp and headset...
  7. caol ila

    Is the headpone amp on AKG Hearo 999 good enough for my Sennheiser HD600?

    It's uninformed bunk like this that caused the HEARO 999 to fail in the marketplace. It was and is good enough to be used in mastering studios. It drives my K601 cans to perfection. This is an old thread, but if somebody finds a good HEARO 999 Audiosphere II system at a good price on the used...
  8. caol ila

    Alternative to Beyerdynamic DT880!

    The sound you want is from an AKG K601 as far as the lively mids and tight bass would go, but it will bring your iPod amp to its knees. A less refined sound would be one of the Grado cans in the lower price ranges, SR60 to SR125. My Grado SR60 was very easy to drive, but from a top quality amp...
  9. caol ila

    AKG Q701 Review

    The K702 graph seems to have a slightly extended bass response just as the K601 would have if you overlaid them. Seems that maybe the K702 is a hybrid of the K701 and the K601. Bass response of the K601 married to the treble of the K701.   The K601 is the slightly warmer K701 that some...
  10. caol ila

    Three-way Review: K501 vs K601 vs K701

    The high impedance of the K601 was to help it integrate into a pro studio environment that had historically seen high impedance headphones. I remember that some of the early Sennheiser headphones were 2000 ohms impedance.   The K601 was obviously the fully open AKG design for the pro market...
  11. caol ila

    AKG K601 & K612 Pro Owners... UNITE!!

    K601 #5205 here. Also have a HEARO 999 #0253 and a no-number K301 XTRA.   Since I have two 999 headsets, I have the pleather earpads on one and the velour earpads on the other. With the pleather earpads the 999 leans toward the K601 sound, and with the velour earpads the 999 leans toward the...
  12. caol ila

    and the prize for the ultimate wireless surround headphones goes to.....

    If reading the spec sheet of the HEARO 999 Audiosphere II and AKG's reputation doesn't convince you of its superiority, then listening to it will convince you within 10 seconds.   Going on 4 years now with my HEARO 999 setup, and it has been one glorious listening experience. Considering...
  13. caol ila

    Ether Tether: A Review of AKG's HEARO 999 Audiosphere II Wireless Headphone System

    WOW! 5 years and nobody bothered to respond to this review. I bought the fabulous HEARO 999 rig with the extra headset when they were closing them out for $650. One of my best audio buys, maybe the best one of all time. The 999 gets more use than any of my hardwired cans.   You forgot to...
  14. caol ila

    Roll Call for Team AKG

    HEARO 999 with two wireless headsets, K601, and K301 XTRA   Gave away my Grado cans, the busted Sennheiser cans will not be repaired (it was a yearly ritual), and my DT880 spends a lot of time in its case these days.   Almost 4 years with 4 AKG cans, and no breakdowns so far, except new...
  15. caol ila

    Three-way Review: K501 vs K601 vs K701

    I'm sorry, but tdocweiler just showed a response chart from HeadRoom that clearly shows the K601 has the best bass, at least the most extended. I have a bass guitar and a bass guitar preamp with headphone output, and the K601 is fairly flat to the lowest note of a 4-string electric bass, and...
  16. caol ila

    Headphones for studio use.

    AKG K702 is open and has replaceable cord, very important. K601 does not have replaceable cord, but you can look around and buy two for what one K702 costs, so the lack of replaceable cord isn't an issue.   DT880, latest version, may require some midrange boost, but it is monitor quality and...
  17. caol ila

    Three-way Review: K501 vs K601 vs K701

    It's strange that a person would do an exhaustive review of three top AKG cans and not even bother to plug them into a headamp specifically designed for the best AKG cans....the AKG HEARO 999 wired headamp in the transmitter base. I have a HEARO 999 system with the dual wireless headphone...
  18. caol ila

    Review by 'caol ila' on item 'AKG K 601 Headphones'

    These were considered the second rate headphones just below the K701 when they first came out, and were priced considerably lower. I considered my pair almost a gift back in 2007. But the K701 got all the attention in the audiophile reviews. Well, little sister has grown up and she is strutting...
  19. caol ila

    Dual output headphone amp?

    standarderror,   Go search the back issues of Stereophile for an article by Corey Greenberg about the headphone amp design he gave to everybody for free. I believe it was a buffer amp, which means your source needs enough voltage, but it gives all the current drive you need for any...
  20. caol ila

    Is it my ears?! :-p (amp differences)

    At this point you should start to get some electrical/audio engineering knowledge and educate yourself to the types of amps and headphones. Practical knowledge is often sufficient, without getting into deep circuit analysis and physics.   My K301 XTRA and K601 cans are both AKG, but have...
  21. caol ila

    Dual output headphone amp?

    You can build your own headphone volume control box and install as many good quality potentiometers as you need.   You should use a minimum of 1 watt power handling capacity, and the left and right channel pots must track each other if using a ganged pot. This eliminates cheap pots. A...
  22. caol ila

    AKG Hearo 999

    The HEARO 999 headamp was voiced for driving AKG pro headphones. The HEARO 999 first and foremost is a pro rig. It sounds very good with the K601, which has the classic AKG pro headphone sound. It doesn't sound nearly as good with Beyerdynamic DT880 cans. They sort of turn into bass monsters...
  23. caol ila

    AKG Hearo 999. Any good?

    The HEARO 999 transmitter base without the wireless headphones would have limited uses. The wired headphone amp is very good as it was made for inefficient AKG pro headphones. My K601 headphones sound better through the HEARO 999 than anything else they have been driven by. No surprise, as AKG...
  24. caol ila

    K701's smooth, lush and musical? Pure distortion... maybe, but who cares it sounds great!

    Yeah, music is a sensual experience......that's why a lot of folks went with the K601 instead of the K701. K701 was something different from the AKG house sound for audiophiles to fidget over, while music lovers who knew they liked AKG house sound went with a K601.   When the K601 is driven...
  25. caol ila

    AKG Hearo Wireless headphones

    I go the HEARO 999 deal with 2 headphones for $649 back in Dec 2007. I get wonderful sound and have had no problems, beside having to replace the batteries in both headsets. They had been in stock for quite a while and the batteries were deteriorated with 45 minute runtime. The Radio Shack...
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