Last time I visited rudistor web site, I found highest model is RP6-DQ, but I have visited the site today RP-6DQ has disappeared and RP5.1 was highest. Why RP-6DQ has been removed in web site? Another question, Is there big difference between RP5.1 and RP5CAV? Please answer. Thanks.

Is this sale for preparation of next amp line-up which will replace max, blockhead, etc or just because they have too many stock as a rumor said? Other rumour also said headroom is also going to produce and sell tube amp. is it right?

I just have received MS-2 and frankly I cannot tell difference with rs-1 that is burnt-in. I just have listened and compared it quite a while. How long it takes for MS-2 to be burnt-in? and what is different in sound after burn-in? I have to buy it or should return to seller after 7 days and...

To me 4G is small. All beatles albums with 192k exceed 1G. Anybody knows if apple has a plan for ipod mini with larger hdd? Please answer

I own rs-1 and I have owned and heard only rs-1 and sr-325. And as far as I heard, rs-2 has some quality diferrent from rs-1 and sr-225 has flattest freq response in grado series. I wonder if I need to get rs-2 or sr-225 or I just need to have only top model and getting other model is just...

I heard hd650 stock cable was improved compared to hd600 stock cable. and I think it is thicker than hd600 cable. And replacement of hd650 cable can improve sound like hd600? I also have hd600 and Cardas cable but I heard here Cardas cable is not good for hd650. I want to know if cable...

Hi. I wonder which DAC is used in grace 901 I saw somewhere DAC of 901 is good but I can't see difference with DAC of arcam cd72t. As far as I listened, only volume level is little higher than analog connection. I mean when arcam 72t and grace 901 is connected by both analog unbalance and...

I'm considering buying corda prehead or max I'm using ra-1 for rs-1 and corda ha-1 for hd600 and wondering upgrade of amp can improve sound. I saw someone wrote max is not better than ra-1 for grados. is it true? I wonder upgrade of amp can really improve sound and if so which amp to choose...

Does hd600 replacement cable sounds better than original cable? I don't belive sound improvement by power cable but somewhat belive in good interconnector though I have not used many interconnector. I could distinguish difference between $1, $20 and $100 interconnectors. I wonder more...

I am satisfied with my headphone amps. corda ha-1 for hd600, ra-1 for rs-1 And for now only CDP is not so satisfactory.. cd72t. I am going to replace it with cd33t or 23t and I wonder headroom max is how much better. is it worth the price? It's price is 4~6 times that of ra-1 and corda ha-1...

I feel difference in staging between left and right ear. I feel this more when I am using ra-1 and rs-1 rather than corda and hd600. I wonder whether this is for my asymmetic ear or wrong equipment. I feel wider stage in right ear that left. and left is somewhat closer that right. Is there...

I'm using arcam cd72T and thinking about buying cd23T I have money but I think buying 23T can be waste of money. In my country, cd23T is 2.5 times price of 72T And dominant idea in the web site I frequently visit is "above some level, tr amp and cdps are almost same. only output power and...

Forgive me for my bad english. I have two interconnectors. One is wireword tera 3 about $20 and one is really cheap connector about 80 cents 80 cent is just for test. I wonder expensive interconnectors are really worth the price. Someone says tera 3 is enough and someone says expensive...

I have bought Arcam CD72 and now my combination is Arcam CD72, Corda, SR-325. As you know Corda has two headphone jack. before I have bought Arcam, I listened with CDROM and 120ohm was sound much better. It provides more weight and feeling of pressure was better than 0ohm. Now, with Arcam, the...

Hi.. I am new here and this is my first posting here. I am going to buy CDP tommorrow. I have SR-325 and Corda.. not portable. And I have no idea which CDP to buy which is around $700~800. Candidates are Denon 1650, Marantz CD17MK2, and Arcam Diva72. Please recommend me which of these is...