Marantz MM7025

[Arci66]

Hello everybody,
Just new in this valid forum.
After decades I have put together finally a system to listen to music at best for my budget and room space.
My system is the following:
Streamer/DAC/Preamp Eversolo A8
Power Amplifier Marantz MM7025
Speakers Sonus Faber Sonetto I
CD Transport Shanling ET3
Head amplifier Zen Can Signature
Headphones Sennheiser HD660H2

I am satisfied about the sound quality overall but I am doubtful about my choice for the power amp.
It was a decision of the last moment and maybe if I knew this forum at the time of my choice I was more temped to try a class D power amp.

My doubt is specific on the capabilities of the Marantz MM7025 to drive at best the Sonetto I
What is your expert view about it.
Is it advisable to try to test a Class D amp like the

AUDIOPHONICS HPA-S400ET Power Amplifier Class D Stereo Purifi 1ET400A 2x400W 4 Ohm​

to drive at best the 4Ohm impedence Sonetto I?
The Marantz from the specs it is not declared for 4Ohm loads but 6-8 Ohms, even if the result is not bad.
I am satisfied by the rest of the gears.
My be I should just sit and enjoy my music but I may take the chance to listen to your expert opinions.

Thanks
Antonio

 

[MarkS]

Welcome to the forum!

The Marantz amp should be fine. At normal listening levels it will be putting out only a watt or two of power. I would not worry about it at all. Some other amps may have better technical measurements into 4 ohm speakers, but almost certainly any differences are well below the threshold of what humans can hear.

 

[Arci66]

Welcome to the forum!

The Marantz amp should be fine. At normal listening levels it will be putting out only a watt or two of power. I would not worry about it at all. Some other amps may have better technical measurements into 4 ohm speakers, but almost certainly any differences are well below the threshold of what humans can hear.

Thanks Mark.
I am fascinating by the class D amps new trend but as I said listening to my system I feel ok, furthermore my listening position is on a sofa at about 2 mts a carpet lay down between the sofa and the speakers.
When I push to 70 to 80 dB the dynamics and instrument separation looks fine, at low dB the sound becomes a bit more flat.
Anyhow I can’t ear remarkable problems at moment.
May be the sonetto I could be paired with a small sub (SF gravis I, Velodyne microvee X, Kef KC62) for music listening, not interested to boom the movies sound, so eventually I could spend some money on a sub to complete my system.
Thanks again for your help

 

[MarkS]

I think a small sub would be much more musically rewarding than a new amp.

 

[mike70]

I think a small sub would be much more musically rewarding than a new amp.

Totally agree, the improvement in bass quality / definition with a dedicated sub + high pass filter to the main speakers isn't marginal ... and also available power / dynamic response.

You need a preamp with high pass filter to the mains and low pass filter to the sub, more or less at 80hz.

 

[Arci66]

I would prefer not to add a preamp and continue to use the A8 preamp filtering by its DSP, connect the sub woofer with speaker level input and use sub crossover for low pass

 

[Chrispy]

I wouldn't change power amps. Is there an actual problem with the Marantz amp now?

While I'd prefer bass management for both speaker/sub, I'd still get a sub before changing power amp.