I had the AVP --> AVP2 upgrade done.
You get a few nice features with the upgrade (DPL II, better bass management, DTS-ES, etc).
You also get a noticeable increase in sound fidelity. This is most obvious with 2-channel music, including DAC functionality. In fact, I sold my Mark-Levinson No.36s after getting the AVP2 upgrade because the AVP2 (IMO) did a better job w/ DAC functionality than the No.36s (the AVP was never this good w/ 2-channel music DAC).
All in all, a very positive improvement.
The biggest negative (if you already have an AVP) is that you do not get any additional connections. The fact that there is only 1 toslink connection is a major pain (XBox and DSS receiver both utilize toslink).
You get a few nice features with the upgrade (DPL II, better bass management, DTS-ES, etc).
You also get a noticeable increase in sound fidelity. This is most obvious with 2-channel music, including DAC functionality. In fact, I sold my Mark-Levinson No.36s after getting the AVP2 upgrade because the AVP2 (IMO) did a better job w/ DAC functionality than the No.36s (the AVP was never this good w/ 2-channel music DAC).
All in all, a very positive improvement.
The biggest negative (if you already have an AVP) is that you do not get any additional connections. The fact that there is only 1 toslink connection is a major pain (XBox and DSS receiver both utilize toslink).