Maybe have a play with some of the DSP options you can apply to discrete formats? You can tweak this beyond any option you'd ever get via any other make of receiver. Yamaha are the kings of DSP and can create real enviroments within most rooms. No other manufacturer has the expertise or experience relating to DSP to do this. You can alter the additional processing to accomodate your room's size or wall coverings. I normally frown upon manuiplulating the audio in such a manner, but Yamaha really do know what they are doing in respect to this and the way they do it can actually improve upon the original audio. It is something I miss with my current Denon receiver. Here are some of the options for example:
Not only are these modes applicable, but they themselves can be modified and customised using the following option:
Parameters for adjusting early-reflected sound:
Adjusts attenuation characteristics of early-reflected sound. You can create a lively sound field (with a high reverberant sound level) as you increase the value, and a dead sound field (with a low reverberant sound level) as you decrease the value. Creating either a lively sound field or a dead sound field in an actual music hall is determined by the acoustic absorption characteristics of reflection surfaces. A dead sound field is created when the attenuation time is short while a lively sound field is created when the attenuation time is long.
Parameters for specifying room size
Produces different senses of sound expansion according to room sizes specified. In a large size room such as a music hall, the duration from when reflected sound is heard until when the next reflected sound is heard is long. Thus, different senses of sound expansion can be created by changing the duration. 1.0 is the original room size. When this parameter is set to 2.0, each side of the room is defined as twice larger than the original room size.
Parameters for adjusting reverberant sound
Reverb Time parameter adjusts the attenuation time of the rear reverberant sound based on the time that about 1kHz reverberant sound takes for 60dB of attenuation. Reverberant sound attenuates faster as you decrease the value. Reverb Time adjustment allows you to create a natural reverberant sound, by setting the attenuation time longer for a sound source or room with less echo, or shorter for a sound source or room with more echo.
Reverb Delay parameter adjusts the time difference between the beginning of the direct sound and the beginning of the reverberation sound. The larger the value, the later the reverberation sound begins. Increasing the value of Reverb Delay allows you to create a reverberant sound in a wider area for the same Reverb Time.
Parameters for defining attenuation characteristics of early-reflected sound
Adjusts the attenuation of reflected sound. You can create a lively sound field (with a high reverberant sound level) as you increase the value, and a dead sound field (with a low reverberant sound level) as you decrease the value. Creating either a lively sound field or a dead sound field in an actual music hall is determined by the acoustic absorption characteristics of reflection surfaces. A dead sound field is created when the attenuation time is short while a lively sound field is created when the attenuation time is long.
Parameters for adjusting reverberant sound
Reverb Time parameter adjusts the attenuation time of the rear reverberant sound based on the time that about 1kHz reverberant sound takes for 60dB of attenuation. Reverberant sound attenuates faster as you decrease the value. Reverb Time adjustment allows you to create a natural reverberant sound, by setting the attenuation time longer for a sound source or room with less echo, or shorter for a sound source or room with more echo.
Reverb Delay parameter adjusts the time difference between the beginning of the direct sound and the beginning of the reverberation sound. The larger the value, the later the reverberation sound begins. Increasing the value of Reverb Delay allows you to create a reverberant sound in a wider area for the same Reverb Time.
Reverb Level parameter adjusts the reverberation sound level. Increasing the value of Reverb Level makes the reverbration sound level higher, which allows you to create more echo.