Since you are considering such an expensive (only relatively speaking obviously) AV receiver, I would suggest you spend some time to do the following:
- Research the specs and test bench measurements (hopefully there are some available) and ignore what the dealer tells you (I guess not totally, and it depends..)
- Bugs reports, reliability issues, warranty means little if you have experienced the inconveniences when something failed, especially if it is intermittent issues, even if your dealer is next door, they most likely have to ship it back to the manufacturers. Even reputable and highly reliable products such as Marantz's do failed and in more than a few cases, people had bad experiences with their major warranty services from their major service center, in some cases, had to send it out more than once and eventually end up with a replacement unit that was uses/refurbished etc..
- AV receivers are highly complicated audio devices, companies such as Audio Control may or may not have the same kind of depth, experience in this kind of products that the leading brands such as Yamaha, Denon and Marantz have.
All of the above probably don't matter to you if you are in the money no object category of audio enthusiast, otherwise you may feel the pain if you have to replace such an expensive unit in just a few years because of bugs, reliability, issues or just obsolescence due to new features that you may want.
On the extreme end (that's what I am being drawn to all the time now), one only need to spend less than $1,500 on something like a Denon AVR-X3800H, or a Cinema 40, or up all the way to the affordable AVR-X6800H that will match or exceed the specs of the AudioControl Concert XR-6 (example the DAC chip used).
The best AVR in terms of specs and measurements at the moment now appears to be the Cinema 30, or the Denon AVR-A10H that uses the brand new ES9017 that has about the same specs as the AudioControl's ES9026 Pro though it does has 124 dB DNR, that is 4 dB higher than the ES9017's 120 dB, distortions specs are the same, both have SINAD 110 dB. As ADTG noted, no one can hear the difference between 120 and 124 dB, or even 110 dB. Neither DACs are considered by ESS Sabre as their "reference" class.
To get the reference class ESS DAC chips you need to get the Denon AVR-A1H (may be the cheaper A10H but not sure), AudioControl Maestro X9, or go separate. For separates, the Anthem AVM90, or the Marantz AV10 are far superior in terms of value, both has the reference class ESS DAC ICs (mentioning it only because that seems to matter to you), the Anthem's has the same ES9038Pro that the Maestro X9 uses, but on Gene's bench, the AV10's actually measured a touch better in SINAD.
I only use some cheap, but good quality surge suppression devices at the outlets, in addition to a "whole house" surge suppression device at the main panel in the basement. All those expensive UPS and so called stabilizer or regulators are silly (unless you are in areas where power quality/reliability is a real issue), but hey, they sell...
Thank you Peng for such a detailed input. I think I really need to drop my idea of going for a super expensive AVRs rather, I shall consider a mid-range AVRs from Brands such as Denon or Marantz & spend more on the best speakers. But again as you mentioned, the reliability of these mid-range AVRs from brands such as Marantz is questionable & due to their product’s fault, a consumer cannot be made to suffer by handling them over a used product in the form of “Refurbished” whereas they had paid for brand new. However, I did talk to one of their service center to take the reliability review of Cinema series to which he said it is supposed to be a well made product in terms of it’s reliability as he hasn’t received a single product yet for repairs within warranty period, this he said in 2023 & Marantz Cinema series were launched in February, 2022.
However, there are only 2 ways to keep my A/V receiver safe.
1) To buy a good Stabilizer to make sure the A/V receiver doesn’t blow up due to voltage fluctuations.
2) To make sure whenever the HDMI or any connectors behind any A/V receiver is to be unplugged or re-plugged or new device is to be plugged-in, one has to “FIRST” Turn OFF & “Completely Power OFF the A/V receivers & it’s connected equipment’s. Make the connection changes behind the A/V receiver or insert new device’s HDMI Cable & once all set, then Power back ON the A/V receiver & it’s connected devices such as TV, Blu-ray player, STB Box, Playstation, XBox, etc…
I learnt this important piece of information about turning off the A/V receiver by spending ₹12,000.00 (USD $142.83) on the repairs of my Yamaha RX-V685 which failed due to the HDMI Current leakage issue.
However, I now aren’t sure of whether my Home’s electricity has Power fluctuations or not? What shall I ask the electrician to check for when he comes over with his equipment? Also which equipment does an electrician require to check for Power fluctuations?
And now finally about the Front Left + Right speakers, I am considering to buy between Sonus Faber vs SVS Sound Bookshelf speakers.
Sonus Faber:
a) Sonetto II (if stock still left with any dealer in India).
b) Sonetto II G2 which has been newly released in India but super expensive just for a pair of Bookshelf.
c) Lumina II - Reasonably priced + I think this speaker has won an award as well.
SVS Sound:
a) Bookshelf Ultra.
b) Bookshelf Ultra Evolution.
c) Bookshelf Prime - But not sure of how better will it’s audio quality be.
Doing an audition of everything is very difficult unless I pack my bags for a week or two journey & become a traveller to go here & there with absolutely no guarantee for sure whether the speakers I auditioned in different cities of different brands & models will exactly sound the same in my living room?
So, it’s gonna be a “Blind purchase”.
So, need everyone’s advice on which will turn out to be super best speakers mentioned above in terms of pristine clear highly detailed note & sound quality product, outputs not harsh but very sweet music as I love listening to songs but loud.
But then is this true that buying a super expensive speakers also need a super expensive A/V receiver of class A/B amplification to marry well perfectly?
Actually my present Front Left + Right are JBL 630 Bookshelf speakers from their newly launched 600 series this year. While these pair of Bookshelves sound nice but it doesn’t give me a Wow experience & a standing ovation, though not sure of whether my existing Yamaha RX-V685 A/V receiver is unable to open-up these pair of JBL 630 completely?
Therefore, now this is my “Last Chance” by moving JBL 630 to surrounds & buy the super best quality of Bookshelf speakers for both Music, Hindi songs & Movie surround effects.
And finally for Dolby Atmos, I am considering between these 2 brands —> Emotiva vs SVS Sound.
Emotiva:
a) Airmotiv XA2 Height / Surround / Ceiling / Reflective Speakers (Pair).
SVS Sound:
a) Prime Elevation.
Now I am also confused on this theory whether 2, 4 or 6 Dolby Atmos enabled speakers are needed to achieve a true Dolby Atmos experience b’coz while someone says all the contents recorded & provided via these OTT apps such as Netflix, Prime Video, Disney+ Hotstar are to the “Max” recorded on 7 channels which means a setup of 5.1.2 or 7.1 is enough but another says that an A/V receiver is meant & designed to transform sound in such a way that even the rear height Dolby Atmos speakers (along with Front Heights so now it’s 5.1.4 or 9.1) sound can be felt & well experienced by setting a delay time limit for these rear heights.
A Google search on this complex topic specifies:
“The minimum number of speakers needed for Dolby Atmos is two, but Dolby recommends four speakers for the best experience. Dolby recommends installing four Dolby Atmos-enabled speakers whenever possible. This is the most precise way to experience realistic overhead sound”.
So need someone to throw some extra light on this complex topic as well.