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adhoc

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Everything posted by adhoc

  1. 2100 statement is at least partially correct. it takes quite a bit of design to get tubes to work well with grados - either your amp has to be carefully designed around it, or the alternative is having an amp with a suitable output transformer, like my eddie current.
  2. just wondering - are many of you confusing pressing origin with different mastering?
  3. hmmm, i thought AKG's discontinued the k1000?
  4. hope you're right then. edited my original post. on reviewing it now i realise i sounded a little cocksure - not good. paiseh, my bad.
  5. ght, you might be wrong on all counts. apparently someone on head-fi has heard those headphones already - they were prototypes for a (failed) venture with a surround sound company - hence the much larger bowl pads. from the grado website - the sr-40 will be out early 2006. EDIT: HOPEFULLY, ght is right with this one..
  6. i dont recognise the cans the 2 children are wearing.. what are they?
  7. Equipment: Source - Cyrus CD-7 (DPS power cord) ICs - Grover UR4 Amplifier - Eddie Current HD-25 (Syl 1952 BadBoy, WE 421A, DIY power cord) Headphones - RS-1, HF-1, stock bowls on both Music (songs) used: Aimee Mann - Red Vines Coldplay - X&Y Franz Ferdinand - Jacqueline Franz Ferdinand - Take Me Out Franz Ferdinand - Dark Of The Matinee Gorillaz - Kids With Guns Rachael Yamagata - Be Be Your Love Rachael Yamagata - Reason Why Rammstein - Mein Herz Brent Sufjan Stevens - Flint Sufjan Stevens - Holland Review/Comparison: Just earlier today I had the good fortune to be able to compare the HF-1 and RS-1 for a good period of time. I used a couple of songs that I was extremely familiar with to compare the 2 headphones. At no point in time was the volume knob on the HD-25 adjusted. At no point in time did I enconter any sibilance or untoward harshness with either headphone. The HF-1 clearly sounds darker than the RS-1. Perhaps it could be a less fatiguing phone to listen to for super-extended (>4hours) periods of time. The RS-1 has a more even frequency response. Pianos on the RS-1 sounded slightly brighter than on the HF-1. Both headphones presented pianos in a completely believable way though. Midbass could get a tad overblown at time with the HF-1. This was very evident with the bass guitar intro in Jacqueline, Take Me Out and Kids With Guns. The overall effect of the excess midbass was to make everything sound wool-ley and diffuse/hazy on the HF-1. The HF-1's instrument seperation and ability to resolve detail fall far short of the RS-1. This was one weakness that stood out especially badly. At times, the instrumentation on Take Me Out and Dark Of The Matinee threatened to collapse into chaos with the HF-1. The RS-1 handled it effortlessly. The instrumentation (strings) on X&Y was a amorphous mass with the HF-1. The RS-1 gave it texture and body. The RS-1 extends both ways better. This was noticed on X&Y and confirmed with Dark Of The Matinee. Some deep bass present on the RS-1 was missing in the HF-1. Surprise surprise - the HF-1 has marginally more bass impact than the RS-1. This was first noticed with the drums on Dark Of The Matinee and subsequently confirmed with the bass drum intro on Be Be Your Love and on Mein Herz Brent. The RS-1 bass impact was marginally more diffuse. You have to listen very hard to notice this. Female vocals sound wonderful on both the RS-1 and HF-1. The balance is tipped a little towards the dark side for the HF-1, which could in some cases make the music sound a tad lifeless. This was noticed with The RS-1 has a much wider soundstage. The RS-1 also managed to get me to that much vaunted state of headphone nirvana much often (when you close your eyes, the music suddenly jumps out of your head and you get completely lost in it...) Clarity: RS-1 wins, hands down. The acoustic guitar on Holland and the male vocals of Coldplay and Sufjan Stevens simply sound much better on the RS-1. On the HF-1 they sound somewhat dark and muddled. Build quality - The HF-1 has a very flimsy and thin vinyl headband. It feels very fragile and flexes in every direction way too easily. I would certainly not throw it into a backpack and bring it around. The RS-1 has a much sturdier and wider leather headband. The RS-1 has much sturdier 'stalks' than the HF-1. The HF-1 is slightly lighter than the RS-1. Conclusion - soundwise or buildwise, does the HF-1 stack up to the RS-1? Unfortunately no. It is certainly not a RS-1 'killer' in any sense of the word. Sorry people, today Goliath wins. But does that render it anything else besides a fantastic deal? Most certainly NOT!! The HF-1 is an awesome deal - I simply cannot emphasise this strongly enough. So much sound, at that price! I strongly advise anyone who is looking to get their first Grado to skip the sr-60/80/125/225 and head straight for the HF-1. Heck, the HF-1 might even win some converts away from the SR-325! If the HF-1 had been available in the past, I would have gladly skipped owning the Beyer DT880, Senn HD-25-1, E2c, K501 and even the MS-2 just to own this headphone! Yes, in this review the HF-1 may have come out looking the inferior headphone, and it is. BUT ONLY IF YOU HAVE A RS-1 NEXT TO IT TO COMPARE TO. Taken on its own merits, the HF-1 definitely stands tall and proud amongst its peers in the same price bracket. And now the part you all have been waiting for... Photos! a group shot of all the equipment involved. note the pad of paper - i made sure every thought that entered my head during listening was written down! focus on the cyrus cd-7 player and berning microzotl. focus on the eddie current hd-25 and headphile single stand. Well... That's all folks. I sincerely hope this thread helps all those people out there wondering about how the HF-1 stacks up against it's big brother, the RS-1. Off topic warning: Some further thoughts at the end of the day... 1. Today was the first time I realised the importance of ICs. The Eddie Current has 3 inputs with an input selector. The Cyrus CD-7 has 2 outputs. Placing 2 pairs of different ICs between them, I was able to rapidly A-B them without having to stop to manually remove ICs. The differences were subtle, but certainly there. My advice - get your main rig components sorted out first, then look to ICs. IMO they are of the 'last 10%' type of upgrade. 2. The Cyrus CD-7 is an excellent source. Dynamic sounding without being fatiguing and having a wide spacious soundstage, and oh - the SLAM! The SLAM!! It completely thrashed my E-MU 1212m. There is simply no comparison. I'm talking Mick Jagger vs Scarlett Johansson - in other words, no comparison. I am now a convert to Dedicated Sources. My next upgrade will be to get a good dedicated redbook source.
  8. Hi all, Sigh, another sgheadphones meet missed... so... POST YOUR IMPRESSIONS ALREADY!
  9. adhoc

    Next meet..

    um, this is a little abrupt, but i have to pull out - i've just been arrowed for COS duty this weekend. or anyone want to ask if we can move the meet to kranji camp? sigh.
  10. adhoc

    Next meet..

    true - it would be a bit pointless for me to come if nobody brought along a source... come on people...
  11. adhoc

    Next meet..

    it's pretty depressing how so many members cannot make it. anyway, for the record, i'll be bringing along a eddie current hd-25, RS-1 and k501. my source is an e-mu1212 so i cant bring that along. anyone in the paya lebar/hougang want to give me a lift? heh. i've got over 30pounds of equipment.
  12. adhoc

    My first PPAv2

    beautiful work! let me guess: 1% resistors (xicon?) elna cerafine caps blue velvet pot bourns trimpots
  13. adhoc

    Next meet..

    Huma Dragonbane, i think it should be the same place.
  14. adhoc

    Next meet..

    add me: 16. adhoc (YES)
  15. frequency does not affect the proportion of attenuation. in fact, the human ear is more sensitive to high(er) frequencies than lower ones, so...
  16. any evidence to back this up, or is it just speculation? afaik, putting a resistor in series before output simply fools the amp into thinking that it is driving a load with higher-impedance. this prevents instability in some amps, but will not solve, for example, a amp not being able to supply enough current. in addition, adding a resistor in series before output would put additional thermal noise into the signal path (every resistor has a 'ppm' rating - the lower, the better) and brings up the possibility of (admittedly minor) channel imbalance due to differences in resistor value between the 2 resistors for L/R.
  17. hmm... vishay/dale rn/rc series resistors electro-harmonix 6922s rubycon caps wima ceramics looks good! EDIT: omg, just realised what an audio nerd i am to be able to tell all those components at a single glance.
  18. DIP versions only. I need 3x of each although I'll likely buy more for matching purposes. [:eek:] AP versions only for OPA627s, please. If applicable, you must be willing to ship international (to Singapore). If applicable, payment via Paypal. Otherwise, COD for local purchases. PM me.
  19. i own the hd201 and i think it sounds fantastic with my ipod shuffle. a dry inoffensive sound. a little 'flat' and 'distant' perhaps, but otherwise a-ok.
  20. adhoc

    WTS,tube amp

    um... some more info regarding this amp perhaps?
  21. have fun. it'll be tough in OCS, but ultimately worth it. however speaking as a spec, you're going to have a tougher time in unit than me.
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