SMSL AD18 80W2 Bluetooth 4.2 HIFI USB DSP Digital Decoding Power Amplifier

Mid-Year Sales, Was Price: US$144.98
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  • Support USB / Optical / coaxial / Bluetooth / AUX input
  • Support remote control.4.2 bluetooth.
  • Using TI TAS5508C + TAS5342A chip
  • Within SMSL patented sound SDB(SMSL Dynamic Bass)

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Signal to noise ratio: 90dB
Power amplifier output power (4ohm): 80W * 2
Headphone output (32 ohms): [email protected] = 0.04%
EQ Quantity: 7 kinds
Treble adjustment range: ± 8dB
Bass adjustment range: ± 8dB
Bluetooth specification: BT4.2
Input interface: USB/Optical *2/Coaxial/ AUX/Bluetooth
Output interface: amplifier output port, headphone port
Chip: TAS5508C, TAS5342A, CS8422, VT1620A, MAX97220A, CS5341, BT4.2 Bluetooth module, NE5532
USB sampling rate: 16bit 44.1kHz-48kHz-96kHz-192kHz; 24bit 44.1kHz-48kHz-96kHz
USB Compatibility: USB2.0
Power amplifier power consumption: 50W
Amp consumption: 4W
Standby power: 0.8W
Supply voltage: 24V

Speakers: 0.04%


USB compatibility: windows XD/7/8/8.1/10
Bit depth: 24bit

Sampling rate:
Optical, Coaxial: 44.1KHz-192KHz
Amplifier power: 4Ω 80W+80W

Headphone power:
32Ω [email protected]=0.04%
64Ω [email protected]=0.02%
150Ω [email protected]=0.02%

Amplifier consumption: 50W
Standby power: 0.8W

Total weight: 1.55Kg
Packing size: 275 * 231 * 74mm


Power supply


Remote control


Customer Questions & Answers

Steve Firestone
Steve Firestone

what is DSP? is it a DAC? Is there a model that has a more powerful Headphone Amplifier?

12/21/17 7:29 PM Asked.

Dear, has a more powerful Headphone Amplifier.Thank you.

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Hi, do both models (old and new) support aptx? Does the Ad18 also support aac codec for iOS devices ?

1/2/18 5:15 PM Asked.

Dear Tobias,yes,it support.Thank you.

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Hello, could you check with SMSL to see if the coax/sub output is supposed to be a TRS to RCA or a TRRS to RCA split?

1/3/18 12:10 AM Asked.

Dear . Thank you for your waiting. The AD18 coax is input. Thank you.

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Hi there, what is the output impedance for this? Thanks.

1/20/18 8:02 AM Asked.

Dear,AD18 can connect with 4-8Ω speaker.Thank you.

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Does this amplifier support Bluetooth headphones and aptX low latency codec? Thanks.

2/22/18 10:24 AM Asked.

Dear peter,it can't.Thank you.

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Hi looking forward to receiving mine I ordered today. I bought a 24V/12A linear regulated power supply. The one it comes with switching and only 6.7A. Should be much better. Two questions: What is Line level sub out crossover frequency and slope please. Any high pass for class D internal amp when you use the sub or still full range? I dont like 24V input connector, does not support high current. If easy I want to solder wire from my power supply direct to the board. Much better. I know it probably will void the warranty but Im a good technician. Do you have a picture inside to see the board? Thank you.

3/19/18 1:26 AM Asked.

Hi, thank you for your message.  We don't have the sinde cuircuit picture for SMSL AD18.  In your case, to solder wire from your power supply direct to the board would probaly have quality warranty issue.  Altough we are not suggest you to diy the product, we will help you to follow up with your product quality issue.  Thanks  Shenzhenaudio

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Do you have manual download? English?

3/19/18 1:29 AM Asked.

Hi, kindly check the manual as below link:

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Hi, does this come with an adapter for use in Australia? Also, what is the difference between the different versions, and which version is this? Thank you!

4/11/18 9:28 PM Asked.

Hi, yes.  We will ship out the correct power plug to customer.  For the old version and the latest version compare.  The new version added the APT-X function and a strong bass & coaxial mix jack.  Thanks and best regards.  Shenzhenaudio

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Is it posible to play audio files (mp3, flac,wma, ...) directly from USB stick conected on AD-18 ?  

10/22/18 4:10 PM Asked.

Hi Tory, yes, you can play common lossless and ordinary MP3 audio directly from USB stick conected on AD-18.Thank you!  

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Hello,    Recently I tried to connect my phone to AD18 via Bluetooth, the phone asked for bluetooth passcode. My phone does not have NFC. What is Bluetooth passcode for SMSL AD18 amp?    Thank you!  

1/28/19 2:30 AM Asked.

Hi Eugene,Generally, it doesn't need the bluetooth passcode while connect phone to AD18 via Bluetooth.Please use another phones for testing.Thank you!

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