Hello Pete,
I was in contact with Alex right after your original shootout here. I ultimately ended up getting your APL Denon. I had told Alex that I did not like the 6H30 tube and he told me he would consider updating this one and only unit to support the ECC99. Ultimately, he decided to provide this as an upgrade for all Denon players. I understand this APL player is only one of two that also has the switching PS as used in the Esoteric-based players.
This APL player was very good with the ECC99 but the AMR 77 player had far greater clarity and less grain in the upper frequencies. This brought on much more harmonic information. And the AMR's bass was much more controlled and extended. I expected more from the APL player but it might also have been because the AMR is really that good. Alex was convinced that bypassing the built-in volume control and simplifying other aspects of the circuit and putting the very latest DACs would make the APL Denon competitive to the AMR. I still have not gotten around to having these updates done to this player.
A few months ago, I tried a tube-rolling experiment. With the new Aria preamp supporting a variety of 6v and 12v tubes in the line stage, I tried many types including several 6922 tubes, the 6H30, the ECC99 and the E180cc/7062. The latter tube in the Aria was high above all the rest - it was not even close. And so I tried an Amperex PQ pinched waist 7062 in the APL Denon and never before had I heard one tube change be as dramatic as this. The smoothness, openness, dimensionality (especially in depth), harmonic textures, etc., were so far beyond the ECC99. The APL Denon's sonic weaknesses I had experienced with the Denon vs. the AMR were now gone. I played with other E180CC tubes and got a little more dynamic contrasts with those but the Amperex had a smoothness that made it the clear winner for me. A return to the ECC99 was impossible as the presentation was incredibly flat after hearing the 7062. The ECC99 significantly removes much of the player's capabilities. This tube discovery undoubtedly saved me several thousand $$ in a CDP upgrade.
I reported my finding to an A'gon member who owns the APL 3.0. And I sent him a pair of the Amperex tubes. His observation echoed mine. But upon him contacting Alex, Alex told him that he should not use this tube in the 3.0 as it draws more current and the PS could ultimately fail due to the lower current driving regulators. But I have had no problem with the APL Denon player perhaps because there is only one tube here vs. two in the Esoteric-based players. And unlike reports by others that the APL Denon player runs hot, the one here runs cool.
I have also heard that Alex is looking to support another tube but I don't recall which one. With the latest round of updates for the Denon-based machines, and the E180CC/7062 tube, I would wager that it could be neck and neck to the ECC99 based 3.0 in some areas and perhaps even outperform it in some key areas. The 7062 tube is really that good. And I wish Alex would locate a pair to hear for himself as replacing a couple of voltage regulators to higher-power versions should be a snap for him.
John
I was in contact with Alex right after your original shootout here. I ultimately ended up getting your APL Denon. I had told Alex that I did not like the 6H30 tube and he told me he would consider updating this one and only unit to support the ECC99. Ultimately, he decided to provide this as an upgrade for all Denon players. I understand this APL player is only one of two that also has the switching PS as used in the Esoteric-based players.
This APL player was very good with the ECC99 but the AMR 77 player had far greater clarity and less grain in the upper frequencies. This brought on much more harmonic information. And the AMR's bass was much more controlled and extended. I expected more from the APL player but it might also have been because the AMR is really that good. Alex was convinced that bypassing the built-in volume control and simplifying other aspects of the circuit and putting the very latest DACs would make the APL Denon competitive to the AMR. I still have not gotten around to having these updates done to this player.
A few months ago, I tried a tube-rolling experiment. With the new Aria preamp supporting a variety of 6v and 12v tubes in the line stage, I tried many types including several 6922 tubes, the 6H30, the ECC99 and the E180cc/7062. The latter tube in the Aria was high above all the rest - it was not even close. And so I tried an Amperex PQ pinched waist 7062 in the APL Denon and never before had I heard one tube change be as dramatic as this. The smoothness, openness, dimensionality (especially in depth), harmonic textures, etc., were so far beyond the ECC99. The APL Denon's sonic weaknesses I had experienced with the Denon vs. the AMR were now gone. I played with other E180CC tubes and got a little more dynamic contrasts with those but the Amperex had a smoothness that made it the clear winner for me. A return to the ECC99 was impossible as the presentation was incredibly flat after hearing the 7062. The ECC99 significantly removes much of the player's capabilities. This tube discovery undoubtedly saved me several thousand $$ in a CDP upgrade.
I reported my finding to an A'gon member who owns the APL 3.0. And I sent him a pair of the Amperex tubes. His observation echoed mine. But upon him contacting Alex, Alex told him that he should not use this tube in the 3.0 as it draws more current and the PS could ultimately fail due to the lower current driving regulators. But I have had no problem with the APL Denon player perhaps because there is only one tube here vs. two in the Esoteric-based players. And unlike reports by others that the APL Denon player runs hot, the one here runs cool.
I have also heard that Alex is looking to support another tube but I don't recall which one. With the latest round of updates for the Denon-based machines, and the E180CC/7062 tube, I would wager that it could be neck and neck to the ECC99 based 3.0 in some areas and perhaps even outperform it in some key areas. The 7062 tube is really that good. And I wish Alex would locate a pair to hear for himself as replacing a couple of voltage regulators to higher-power versions should be a snap for him.
John