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Yamaha A-S501 vs Rotel Diamond Series RA-6000
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Yamaha A-S501

Integrated Amplifier | 85 watts RMS into 8-ohms

Yamaha A-S501
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Rotel Diamond RA-6000

Integrated Amplifier | 200 watts RMS into 8-ohms

Rotel Diamond Series RA-6000
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Yamaha A-S501 Yamaha A-S501
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Rotel Diamond RA-6000 Rotel Diamond RA-600...
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Yamaha A-S501
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Rotel Diamond RA-600...
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Yamaha A-S501 vs Rotel Diamond RA-6000 Integrated Amplifier Comparison

In this review, we will be comparing A-S501 and Diamond Series RA-6000, two Integrated Amplifiers from Yamaha and Rotel. Let's have a brief look at the main features of Yamaha A-S501 and Rotel Diamond RA-6000 first before getting into our more detailed comparison.

Yamaha A-S501 Key Specs

  • 85 watts RMS into 8-ohms
  • Built-in DAC
  • Phono Input
  • Weight: 22.70 lbs / 10.32 kg
  • Dimensions (H x W x D):6inch x 17-1/8inch x 15-7/16inch

Rotel Diamond RA-6000 Key Specs

  • 200 watts RMS into 8-ohms
  • Built-in DAC
  • Phono Input
  • USB Input
  • Bluetooth
  • Weight: 41.47 lbs / 18.85 kg
  • Dimensions (H x W x D):5-11/16inch x 17-1/16inch x 17-15/16inch

What size room are the Yamaha A-S501 and Rotel Diamond RA-6000 Amplifiers good for?

The size of the room in which you are planning to use these amplifiers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their max power parameters:

Listening Environment Yamaha A-S501 Rotel Diamond RA-6000
Near-field Poor Are you nuts?
Small Room Average Bad
Mid-size Room Good Poor
Large Room Average Good
Very Large Room Poor Good

In the following sections, we will get into more detail in order to understand how Yamaha A-S501 and Rotel Diamond RA-6000 compares and end up with enough arguments to decide which one of these amplifiers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Reasons to choose Yamaha A-S501 over Rotel Diamond Series RA-6000
MSRP Price(*) 550USD vs 4,500USD costs less (*prices may change depending on the seller, location and time)
Total Analog Inputs 6 vs 4 More options for connecting Analog sources
Base Surface Area 1709.6cm2/ 265.0inch2 vs 1979.0cm2/ 306.7inch2 takes less space in your room

Reasons to choose Rotel Diamond Series RA-6000 over Yamaha A-S501
Watts into 8-ohms 200 watts vs 85 watts Delivers higher power into 8-ohms speakers
Total Harmonic Distortion (THD) 0.0075% vs 0.019% Less Harmonic Distortion
Signal to Noise Ratio 103 dB vs 99 dB Higher ratings results in cleaner sound
Bluetooth Yes vs No Stream music via Bluetooth devices
Optical Digital Inputs 3 vs 1 More options for connecting Digital sources
Coaxial Digital Inputs 3 vs 1 More options for connecting Digital sources
USB Input Yes vs No Connect Sources via USB
Roon Tested vs No Roon Compatibility
Max Bit Depth 32-bit vs 24-bit Play higher resolution range media
Max Sample Rate 384kHz vs 192kHz Play higher resolution media
Height 145mm vs 153mm Easier to fit in smaller spaces

Inputs and Outputs

The input and output selections that are offered is an important factor when comparing two amplifiers. Here you can find how the I/O selections of the Yamaha A-S501 and Rotel Diamond RA-6000 differs from each other.

Yamaha A-S501 Inputs
  • Total Number of Analog Inputs: 6
  • Phono Input
  • 1 Optical Digital Input
  • 1 Coaxial Digital Input
Rotel Diamond RA-6000 Inputs
  • Total Number of Analog Inputs: 4
  • Phono Input
  • 3 Optical Digital Input
  • 3 Coaxial Digital Input
  • USB Input:
    • USB-A front(Connects to iOS devices)
    • USB-B (allows connection to your Windows PC or Mac computer)
  • Ethernet Port
  • XLR Input Port
Yamaha A-S501 Back View
Yamaha A-S501 Back View (Click the image for the larger version)

Outputs
  • Sub Preamp Outputs
  • 1/4 Headphone Output
  • Subwoofer Output
Outputs
  • Stereo RCA, Sub Preamp Outputs
  • 3.5mm Headphone Output
  • Subwoofer Output
Rotel Diamond RA-6000 Back View
Rotel Diamond RA-6000 Back View (Click the image for the larger version)

What's in the Box of Yamaha A-S501?

Here are the items that are included inside the box of A-S501:
  • Stereo integrated amplifier
  • Remote control (RAS13)
  • 2 AA batteries
  • Owners manual (En/ Fr)
  • Warranty information (US/CA)
  • On-line product registration information
  • Yamaha Worldwide Representative Offices note
  • What's in the Box of Rotel Diamond RA-6000?

    Here are the items that come with the Diamond Series RA-6000:
  • Stereo integrated amplifier
  • 58-inch AC power cord
  • Remote control (RR-AX200)
  • 2 AA batteries
  • 59-inch USB-B to USB-A cable
  • 57-inch Ethernet cable
  • USB thumbdrive (with Windows PC driver)
  • Quick Installation Guide
  • Warranty/Registration Card
  • Important Safety Instructions
  • Addendum For Roon Test
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