Hi Topsel -
Sorry if I missed your e-mail question. I see that you currently have options here on Audiogon for both a DNA-500 and a DNA-2 LAE (limited Anniversary Edition). Both are fine amplifiers with a lot of power and either one might work well for you, but there are differences...
First of all, the DNA-2 LAE being offered has not been upgraded - it is in stock form except for some gold binding posts that have been added to the normal custom speaker connections (per the photos). I daresay these were added for convenience, and they may be used or removed as you prefer.
The DNA-2 is an older design that dates from the mid-'90s, and is essentially a higher performance redesign of the DNA-1. The driver circuitry is dual-mono, and the outputs are each double the size of the DNA-1 (16 output devices per side as opposed to 8). This along with the very large toroid power transformer allows the DNA-2 to deliver 300W per channel (8 Ohms) minimum. It is also fairly large and heavy (no surprise there) and runs rather warm, although it includes a standby circuit that reduces the bias (and thus the heat) when the amp is not in use. The LAE version was fitted with a lot of premium-grade parts (particularly Vishay S-102 bulk-metal-foil resistors), thicker circuit boards, custom speaker terminals (which require a hex wrench to operate), and a thicker, gold-embossed faceplate. Like all DNA-2s it has both balanced and unbalanced inputs that are selected via an internal jumper.
The sound of the DNA-2 is best characterized as clean, open, and relaxed, with tremendous dynamics when required. Bass is deep and powerful, but is a bit rich, with a bit of added warmth in the upper-bass / lower-mid region. This warmth can be very engaging in the right system. Focus and clarity are excellent, and the soundstage is open and deep.
On the other hand, the DNA-500 is a much newer design that I did for McCormack Audio of VA around 2001. Unlike ALL of the other DNA amps, the 500 is fully balanced / differential. Among other things, this allows it to deliver more power than the DNA-2 in a smaller-overall package, with considerably less heat. The input is transformer-coupled which eliminates DC or RFI problems, allows for a simpler, cleaner input topology, and handles both balanced and unbalanced inputs via the same path. The 500 is more tonally neutral than the DNA-2, and in my opinion "gets out of the way" more completely - something I like very much. Rootmann's descriptive term "velvet hammer" sums it up pretty well - the 500 never gets frazzled or seems like it's running out of gas. Whatever the music demands, there it is. The DNA-500 has a 10KOhm input impedance, which is low enough that some tube preamps and resistor-based passive units won't mate well, so you do have to pay attention to proper impedance matching. Your preamp should have an output impedance of about 800 Ohms or less to do the job properly.
That's it in a nutshell - both amps are very good, and both will drive any speaker you choose.
Best regards,
Steve McCormack
SMc Audio
Sorry if I missed your e-mail question. I see that you currently have options here on Audiogon for both a DNA-500 and a DNA-2 LAE (limited Anniversary Edition). Both are fine amplifiers with a lot of power and either one might work well for you, but there are differences...
First of all, the DNA-2 LAE being offered has not been upgraded - it is in stock form except for some gold binding posts that have been added to the normal custom speaker connections (per the photos). I daresay these were added for convenience, and they may be used or removed as you prefer.
The DNA-2 is an older design that dates from the mid-'90s, and is essentially a higher performance redesign of the DNA-1. The driver circuitry is dual-mono, and the outputs are each double the size of the DNA-1 (16 output devices per side as opposed to 8). This along with the very large toroid power transformer allows the DNA-2 to deliver 300W per channel (8 Ohms) minimum. It is also fairly large and heavy (no surprise there) and runs rather warm, although it includes a standby circuit that reduces the bias (and thus the heat) when the amp is not in use. The LAE version was fitted with a lot of premium-grade parts (particularly Vishay S-102 bulk-metal-foil resistors), thicker circuit boards, custom speaker terminals (which require a hex wrench to operate), and a thicker, gold-embossed faceplate. Like all DNA-2s it has both balanced and unbalanced inputs that are selected via an internal jumper.
The sound of the DNA-2 is best characterized as clean, open, and relaxed, with tremendous dynamics when required. Bass is deep and powerful, but is a bit rich, with a bit of added warmth in the upper-bass / lower-mid region. This warmth can be very engaging in the right system. Focus and clarity are excellent, and the soundstage is open and deep.
On the other hand, the DNA-500 is a much newer design that I did for McCormack Audio of VA around 2001. Unlike ALL of the other DNA amps, the 500 is fully balanced / differential. Among other things, this allows it to deliver more power than the DNA-2 in a smaller-overall package, with considerably less heat. The input is transformer-coupled which eliminates DC or RFI problems, allows for a simpler, cleaner input topology, and handles both balanced and unbalanced inputs via the same path. The 500 is more tonally neutral than the DNA-2, and in my opinion "gets out of the way" more completely - something I like very much. Rootmann's descriptive term "velvet hammer" sums it up pretty well - the 500 never gets frazzled or seems like it's running out of gas. Whatever the music demands, there it is. The DNA-500 has a 10KOhm input impedance, which is low enough that some tube preamps and resistor-based passive units won't mate well, so you do have to pay attention to proper impedance matching. Your preamp should have an output impedance of about 800 Ohms or less to do the job properly.
That's it in a nutshell - both amps are very good, and both will drive any speaker you choose.
Best regards,
Steve McCormack
SMc Audio