Anytime I sit down to evaluate a new product, I try to use the same equipment I've used in past evaluations. My goal is consistently to try and maintain a controlled environment. What I mean by this, is that the human's memory to acoustic reproduction is quite short. So the more familiar one is with the material used, both with audio equipment and recordings, the better chance one can pick up on the differences between the pieces being reviewed.
For headphone listening, the most neutral headphone amp I have in my wardrobe is the Luna amp. This was a prototype amp built and designed for Moon Audio by a good friend of mine Kevin Carter of K&K Audio. Our plan was to release this amp under the Moon Audio name, but because of everything else on my plate, it is still being called a prototype amp. Someday. Anyway, the amp sound can be described as a tube amp for the person who is a Solid State fan. It is very clean, detailed, neutral and natural sounding. It has wonderful dynamics and there is no colorful warm laid back lush tube sound emanating from this amp. However, it is one of those audio pieces that can be unforgiving. If the source material or equipment upstream is poor, it will for sure, let you know. As for sources my choice these days is the Cary Audio 303T SACD Pro. I have found it and it's big brother the 306 SACD Pro to be amongst the finest single box sources ever produced. I owned the 306 Pro, prior to the 303T, and only changed because of the new USB input option on the 303T. Streaming Audio is the future!
The 2 headphones I chose to compare with the Beyerdynamic T5p where the Denon AH-D7000 and the other Tesla, the Beyerdynamic T1. The Denon has a close normal impedance to the Tesla T5p @ 25 ohms and is also a closed back headphone. The Luna has dual headphone outputs and thus makes swapping between two phones very easy. Having the impedances close takes away the need to constantly tweak the volume control between the 2 phones. I also conveniently had a nicely burnt in pair of Denons from the last Headfi Audio Meet in Charlotte, NC.
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My T1's, I must note, are also recabled with the Moon Audio Black Dragon V2 Headphone cable. But since the T1 and T5p utilize different stock cables, I did not see this as much of an issue. I will note that once I have a pair of T5p headphones for myself I will recable them with the same Black Dragon V2 cable. At that time I will post some follow up notes and comparisons between the two headphones. Having both phones with as many similar controlled variables as possible will help establish their true differences.
Because the T1 has a normal impedance of 600 ohms, I had to constantly adjust the volume control to compensate for the different sound levels produced when comparing to the Denon or T5p. But after a few exchanges, I was easily able to dial in quite quickly the equal sound levels needed to make my comparisons.
Any of you who have been to my audio equipment display tables at the local or national HeadFi meets, have probably heard the same test disc that I used in this review. I use a variety of songs from across the genres. There is classical, jazz, blues, rock, alternative etc etc. Here is that list of test track material.
Anytime I sit down to evaluate a new product, I try to use the same equipment I've used in past evaluations. My goal is consistently to try and maintain a controlled environment. What I mean by this, is that the human's memory to acoustic reproduction is quite short. So the more familiar one is with the material used, both with audio equipment and recordings, the better chance one can pick up on the differences between the pieces being reviewed. For headphone listening, the most neutral headphone amp I have in my wardrobe is the Luna amp. This was a prototype amp built and designed for Moon Audio by a good friend of mine Kevin Carter of K&K Audio. Our plan was to release this amp under the Moon Audio name, but because of everything else on my plate, it is still being called a prototype amp. Someday. Anyway, the amp sound can be described as a tube amp for the person who is a Solid State fan. It is very clean, detailed, neutral and natural sounding. It has wonderful dynamics and there is no colorful warm laid back lush tube sound emanating from this amp. However, it is one of those audio pieces that can be unforgiving. If the source material or equipment upstream is poor, it will for sure, let you know. As for sources my choice these days is the Cary Audio 303T SACD Pro. I have found it and it's big brother the 306 SACD Pro to be amongst the finest single box sources ever produced. I owned the 306 Pro, prior to the 303T, and only changed because of the new USB input option on the 303T. Streaming Audio is the future! The 2 headphones I chose to compare with the Beyerdynamic T5p where the Denon AH-D7000 and the other Tesla, the Beyerdynamic T1. The Denon has a close normal impedance to the Tesla T5p @ 25 ohms and is also a closed back headphone. The Luna has dual headphone outputs and thus makes swapping between two phones very easy. Having the impedances close takes away the need to constantly tweak the volume control between the 2 phones. I also conveniently had a nicely burnt in pair of Denons from the last Headfi Audio Meet in Charlotte, NC..My T1's, I must note, are also recabled with the Moon Audio Black Dragon V2 Headphone cable. But since the T1 and T5p utilize different stock cables, I did not see this as much of an issue. I will note that once I have a pair of T5p headphones for myself I will recable them with the same Black Dragon V2 cable. At that time I will post some follow up notes and comparisons between the two headphones. Having both phones with as many similar controlled variables as possible will help establish their true differences. Because the T1 has a normal impedance of 600 ohms, I had to constantly adjust the volume control to compensate for the different sound levels produced when comparing to the Denon or T5p. But after a few exchanges, I was easily able to dial in quite quickly the equal sound levels needed to make my comparisons. Any of you who have been to my audio equipment display tables at the local or national HeadFi meets, have probably heard the same test disc that I used in this review. I use a variety of songs from across the genres. There is classical, jazz, blues, rock, alternative etc etc. Here is that list of test track material.
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