Topping MX3 Multi-purpose Digital Amplifier
Now, here's a multi function digital amplifier with built-in DAC, Bluetooth, headphone amp and power amplifier for passive speakers. One of Zeos's favorite devices, all-in-one unit that features coaxial digital input, fiber optic, Bluetooth, analog input, subwoofer output, line input, a good headphone amplifier with a user friendly remote control! Limited units available
For those of you new to this, here's a pretty good DAC 101 article. In layman's terms, a DAC simply converts digitally stored information (stream of 1s and 0s) from a smartphone, laptop computer into an analog sound that we can hear.
Many devices include built-in DACs. However, an outboard/ external DAC usually offers better sound quality by minimizing jitter problems, background hiss and unwanted noise.
Topping MX3 is a true multitasker. Its compact, aluminum case is filled to the brim with hi-fi audio components. Inside you’ll find a USB DAC, Bluetooth receiver, integrated amplifier and a headphone amplifier. MX3 is fitted with a myriad of inputs and outputs, including USB, optical and coaxial inputs, and 3.5mm jack headphone output, banana outputs and a dedicated RCA output for a subwoofer.
MX3 is based on high-quality components with proven reputation in the audio world, these include PCM5120A DAC chip, SA9023A USB interface, CS8416 S/PDIF receiver, NJW1194 volume controller, TDA7498E amplifier chip and LMH6643 headphone amplifier chip.
Texas Instruments PCM5120A DAC chip uses the latest generation of TI-s advanced segment-DAC architecture to achieve excellent dynamic performance and improved toleracne to clock jitter. It comes with a 32bit, 384kHz PCM interface and features market-leading low out-of-band noise, integrated negative charge pump, intelligent muting system and an integrated high-performance audio PLL which reduces the system’s EMI.
STMicroelectronics TDA7498E is a dual BTL class-D audio amplifier known for its high efficiency, differential inputs that minimize common-mode noise, small offset and smart thermal overload protection.
Texas Instruments LMH6643 chip responsible for headphone amplification is a true single supply voltage feedback amplifier that offers high speed (130MHz), low distortion (-62dBc), and an exceptionally high output current (approximately 75 mA). Its output voltage range allows for a wide dynamic range, its output stage is capable of driving heavy loads, while fast output Slew Rate (130V/us) ensures large peak-to-peak output swings even at high speeds. Careful attention has been paid to ensure LMH6643’s stability under all operating voltages and modes. The result is a very well behaved frequency response characteristic (0.1dB gain flatness up the 12 MHz under 150 Ω load and AV = +2) with minimal peaking (typically 2dB maximum).
Its intuitive design makes it very easy to use. It has a very readable LED display and a number of facilitations, such as remote control or NFC pairing that, combined with high quality components, guarantees joy of listening to the music.
|Inputs||Bluetooth, USB, Optical, Coaxial, Aux|
|Speaker output||BTL, banana|
|Bluetooth range||< 10m|
|THD+N||Headphone out <0.0006% @ 1kHz, 130mW, 32Ohm|
Speakers out <0.005% @ 1kHz, 20W, 8Ohm
|SNR||Headphone out >103dB @ 1kHz|
Speakers out >91dB @ 1kHz
|Frequency response||20Hz - 20kHz|
|Noise||Headphone out <18uVrms |
Speakers out <0.5Vrms
|Output voltage||Headphone out 10Vpp|
Speakers out 46Vpp
|Gain||Headphone out 11.6dB|
Speakers out 29.6dB
|Output power||Headphone out 257mW x 2 @ 32 ohm THD+N<1%; 42mW x2 @ 300 ohm THD+N<1%|
Speakers out 38W x 2 @ 8 ohm THD+N<10%; 40W x 2 @ 4 ohm THD+N<10%
|Suitable load impedance||Headphone out 16 - 300 Ohm|
Speakers out 4 - 8 Ohm
|USB in||44.1kHz - 96kHz / 16 Bit - 32 Bit|
|Optical/coaxial in||44.1kHz - 192kHz / 16 Bit - 24 Bit|
|Bluetooth||HFPV1.6, A2DPV1.2, AVRCPV1.4|
|Dimensions||18.5 x 12.2 x 3.8cm|
|Power input||DC24V/ 3.75A|
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