6 Best Alternatives to the Fosi Audio MC351 2.1 Channel Integrated (2026)

How the Alternatives Compare

Fosi Audio Bluetooth Tube DAC Amplifier

The Fosi Audio MC331 drops the 2.1-channel subwoofer output found in the MC351 to focus on pure stereo performance. It uses tube technology for a warmer sound profile, which differs from the MC351’s dual TPA3255 Class-D chips. This model weighs only 1.4 pounds, making it lighter than the MC351’s 2.2 pounds. It retains Bluetooth and USB connectivity but lacks the optical and coaxial digital inputs present on the MC351. You should choose this if you prefer stereo purity and vintage tube warmth over multi-channel home theater capabilities. It is ideal for desktop setups with bookshelf speakers rather than large living room systems.

SMSL A300 Class D Stereo Amp

The S.M.S.L A300 offers 165W of power output similar to the MC351’s per-channel rating but lacks the dedicated subwoofer channel of the 2.1 setup. It features a compact design with dimensions of 7.48 by 8.27 inches, which is wider than the MC351 but shallower. This amplifier prioritizes raw wattage and wireless convenience over analog input versatility. It supports Bluetooth and USB but does not list optical or coaxial inputs in its attributes. You might pick this if you need strong stereo power for active subwoofers and prefer a minimalist Class-D design. It fits users who value digital flexibility and high output in a smaller physical footprint.

CrBoke Vacuum Tube Class A/B Amplifier

The CrBoke CR333 is a heavy, stationary unit weighing 14 pounds, significantly heavier than the MC351’s 2.2 pounds. It uses vacuum tube Class A/B amplification for a warm sound, contrasting with the MC351’s Class-D efficiency. This model includes a phono input, allowing direct turntable connection without an external preamp. It offers Bluetooth and USB connectivity alongside digital inputs. The CR333 provides 2.1-channel capability with a subwoofer output, matching the MC351’s channel count. You should choose this if you prioritize tube warmth and analog inputs over compact size. It is best for listeners who want a premium, heavy-duty amplifier with vintage aesthetics and detailed sound reproduction.

Fosi Audio 2.1 Channel Bluetooth Amplifier

The Fosi Audio BT30D Pro is a compact 2.1-channel amplifier similar to the MC351 but focuses on desktop use. It weighs only 1.5 pounds, making it lighter than the MC351. This model uses the TPA3255 DAC chip and delivers 165W of power. It supports Bluetooth connectivity but lacks the optical and coaxial inputs found on the MC351. The BT30D Pro emphasizes dedicated subwoofer tuning and bass control. You should pick this if you prioritize wireless convenience and a small footprint over versatile connectivity options. It is ideal for users who want strong bass performance in a minimal space without the need for multiple digital input types.

AIYIMA Balanced Bluetooth Stereo Amplifier

The AIYIMA A80 is a stereo amplifier that lacks the 2.1-channel subwoofer output of the MC351. It features balanced inputs, which the MC351 does not list, offering higher fidelity for critical listening. This model uses the TPA3255 DAC chip and supports Bluetooth connectivity. It weighs 3.66 pounds, heavier than the MC351. The A80 prioritizes audio fidelity and input flexibility over integrated subwoofer channels. You should choose this if you need balanced XLR connections for professional or high-end stereo setups. It is best for users who value precise sound control and balanced signal paths over the multi-channel convenience of a 2.1 system.

Fosi Audio Balanced DAC and Headphone Amp

The Fosi Audio ZH3 is a DAC and headphone amplifier, not a speaker amplifier like the MC351. It lacks speaker outputs and focuses on high-resolution audio processing and balanced XLR outputs. This model supports USB, RCA, and Optical inputs, providing digital flexibility similar to the MC351. It weighs 2.87 pounds, slightly heavier than the MC351. The ZH3 prioritizes wired connectivity and detailed audio processing over wireless convenience. You should pick this if you need precise sound control for headphones or balanced line-level outputs. It is ideal for listeners who want high-resolution audio decoding without the need for integrated speaker amplification.

Quick picks

Our 7 picks

1 Best overall

Fosi Audio 2.1 Channel Bluetooth Amplifier

Best for: Compact 2.1 home theater systems

Power Output

Up to 165W x 2 + 350W

Amplifier Class

Class-D

Audio Inputs

USB, Optical, Coaxial

Wireless Connectivity

Bluetooth

Channels

2.1-Channel

Features

Built-in DAC

View on Amazon: Fosi Audio 2.1 Channel Bluetooth Amplifier Affiliate link

This Fosi Audio MC351 integrates a DAC with dual TPA3255 Class-D chips to deliver 165W per channel plus 350W for a subwoofer. It supports Bluetooth, USB, optical, and coaxial inputs. The all-aluminum body includes a VU meter and tone controls. It suits you if you want a compact 2.1 setup with high-resolution decoding and minimal interference between signals.

Pros

• Outputs 165W x 2 + 350W via dual TPA3255 chips
• Includes built-in DAC with optical, coaxial, and USB inputs
• All-aluminum CNC body with integrated VU meter
• Separate PCBA design reduces signal interference

Cons

• Limited to 2.1 channel configuration
• No mention of remote control inclusion
• No mention of analog RCA input connectivity

Good fit if

• You need a dedicated subwoofer output for 2.1 audio
• You prefer digital inputs like optical or coaxial
• You want a compact amplifier with tone controls

Skip if

• You require a full 5.1 or 7.1 surround setup
• You need analog line-level inputs for legacy gear
• You want a tube amplifier for warm sound

Verdict: Fosi Audio MC351 2.1 Channel Amp delivers high power and digital flexibility for stereo setups. It fits you if you prioritize clean signal separation and subwoofer support in a small footprint.

2 Also great

Fosi Audio Bluetooth Tube DAC Amplifier

Best for: Stereo bookshelf speaker setups with tube warmth

Power Output

105W x2 @ 4Ω

Audio Inputs

USB, Optical, Coaxial, RCA

Audio Outputs

3.5mm, Pre-out

Wireless Connectivity

Bluetooth

Speakers

Bookshelf Speakers

Amplifier Type

Tube Amplifier

View on Amazon: Fosi Audio Bluetooth Tube DAC Amplifier Affiliate link

The Fosi Audio MC331 is a two-channel integrated amplifier with vacuum tubes. It delivers 105W per channel at 4 ohms to drive bookshelf speakers. The unit includes a built-in DAC and supports Bluetooth, USB, coaxial, optical, and RCA inputs. A remote control allows you to adjust bass and treble. Its compact footprint fits on desktops while providing versatile connectivity for various audio sources.

Pros

• 105W x2@4Ω power output for bookshelf speakers
• Integrated DAC with USB, optical, coaxial, and RCA inputs
• Bluetooth wireless connectivity
• Remote control for bass and treble adjustment

Cons

• Two-channel configuration only, no subwoofer output
• Requires turntables with built-in phono preamps
• No dedicated subwoofer channel for 2.1 setups

Good fit if

• You want tube warmth and visual aesthetics
• You need multiple digital and analog inputs
• You are using bookshelf speakers

Skip if

• You require a 2.1 channel system with subwoofer output
• You need a 7.2 channel home theater receiver
• You want rack-mountable equipment

Verdict: The Fosi Audio MC331 Tube Integrated Amplifier suits listeners who prefer stereo purity and tube warmth. It is a practical option for desktop setups with bookshelf speakers but does not replace a multi-channel receiver.

3 Best class d

SMSL A300 Class D Stereo Amp

Best for: 2.1 audio systems with active subs

Power Output

165W x 2

Amplifier Class

Class D

Audio Inputs

RCA, USB

Audio Outputs

Subwoofer preamp output

Wireless Connectivity

Bluetooth 5.0

Total Harmonic Distortion

0.004% THD+N

View on Amazon: SMSL A300 Class D Stereo Amp Affiliate link

The S.M.S.L A300 is a Class D integrated amplifier designed for high-fidelity audio. It delivers 165 watts per channel and supports a 2.1 system setup via a dedicated subwoofer preamp output. Key specs include Hi-Res Audio certification, Bluetooth 5.0 for wireless streaming, and an Infineon digital amplifier chip. This unit suits listeners who want powerful output and low distortion in a compact aluminum chassis.

Pros

• 165W x 2 power output
• Bluetooth 5.0 connectivity
• Subwoofer preamp output for 2.1 systems
• Hi-Res Audio certified

Cons

• Only RCA and USB inputs
• No optical or coaxial digital inputs listed
• No phono stage for turntables

Good fit if

• You need a subwoofer output for a 2.1 setup
• You want high power for larger speakers
• You prefer wireless Bluetooth 5.0 streaming

Skip if

• You need to connect a turntable directly
• You require optical or coaxial digital inputs
• You want a tube amplifier sound

Verdict: S.M.S.L A300 Class D Integrated Amp offers strong power and a subwoofer output for those building a 2.1 system. It fits users who prioritize raw wattage and wireless convenience over analog inputs.

4 Best premium

CrBoke Vacuum Tube Class A/B Amplifier

Best for: warm tube sound with subwoofer output

Power Output

Up to 100W (50W + 50W)

Amplifier Class

Class A/B

Audio Inputs

USB, coaxial, optical, RCA

Audio Outputs

Speaker, subwoofer, 3.5mm headphone

Wireless Connectivity

Bluetooth 5.0

Amplifier Type

Integrated Amplifier

View on Amazon: CrBoke Vacuum Tube Class A/B Amplifier Affiliate link

The CrBoke CR333 is a Class A/B tube amplifier featuring Bluetooth 5.0 and a built-in DAC. It delivers 100 watts (50W + 50W) and includes a dedicated subwoofer output for 2.1-channel setups. With inputs like coaxial, optical, and RCA, it suits listeners seeking warm, tube-based sound. This unit weighs 14 pounds and measures 12.6 inches wide.

Pros

• Class A/B tube design with 6F1 and 84A tubes
• Bluetooth 5.0 wireless connectivity
• Dedicated subwoofer output for 2.1-channel audio systems
• Built-in DAC with coaxial and optical inputs
• 100W total power output (50W + 50W)

Cons

• Heavy 14-pound build limits portability
• Large footprint at 12.6 inches wide
• No remote control listed in specifications

Good fit if

• You want warm tube sound with Bluetooth convenience
• You need a subwoofer output for 2.1-channel audio
• You prefer Class A/B tube amplification

Skip if

• You need a lightweight, portable amplifier
• You require a remote control for operation
• You want a compact, rack-mountable unit

Verdict: The CrBoke CR333 Tube Stereo Amplifier fits listeners who prioritize warm tube sound and 2.1-channel capability over compact size. It serves those wanting Bluetooth and digital inputs in a heavy, stationary unit.

5 Best budget

Fosi Audio 2.1 Channel Bluetooth Amplifier

Best for: Compact 2.1 setups with Bluetooth

Power Output

165W x 2 + 350W

Amplifier Class

Class-D

Audio Outputs

Passive speaker, passive subwoofer

Wireless Connectivity

Bluetooth 5.0

Speakers

Bookshelf Speakers

Color

Black

View on Amazon: Fosi Audio 2.1 Channel Bluetooth Amplifier Affiliate link

The Fosi Audio BT30D Pro is a 2.1 channel amplifier designed for home theater or HiFi setups. It uses two TPA3255 chips to deliver 165W per channel plus 350W for the subwoofer. You get dedicated controls for subwoofer frequency and volume. Bluetooth 5.0 provides wireless streaming up to 15 meters. Its compact metal body fits desktops or small spaces. This unit suits listeners who want deep bass integration.

Pros

• 165W x 2 + 350W power output
• Dedicated SUB FREQ and SUB VOL knobs
• Bluetooth 5.0 connectivity
• Solid all-metal construction

Cons

• Limited to Bluetooth 5.0 without wired input options listed
• No remote control included in specifications
• Passive outputs require separate subwoofer

Good fit if

• You want tight, adjustable bass for movies or games
• You need a compact 2.1 channel solution for desktop use
• You prefer wireless streaming via Bluetooth

Skip if

• You require active subwoofer support
• You need multiple input sources like RCA or optical
• You want a remote control for operation

Verdict: The Fosi Audio BT30D Pro 2.1 Subwoofer Amp delivers strong bass control and clear stereo sound in a small footprint. It fits you if you prioritize wireless convenience and dedicated subwoofer tuning over versatile connectivity.

6 Best home theater

AIYIMA Balanced Bluetooth Stereo Amplifier

Best for: high-resolution stereo setups with balanced inputs

Power Output

300W*2

Amplifier Class

Class D

Audio Inputs

TRS balanced, USB, optical, coaxial

Audio Outputs

3.5mm AUX, RCA, SUB Pre-Out

DAC Chip

ESS9038Q2M

Wireless Connectivity

Bluetooth

View on Amazon: AIYIMA Balanced Bluetooth Stereo Amplifier Affiliate link

The AIYIMA A80 integrates a high-power Class D amplifier with a studio-grade ESS9038Q2M DAC. It delivers 300W per channel with low distortion. You get multiple inputs including TRS balanced, USB, optical, and coaxial. The unit includes a digital VU meter and Bluetooth connectivity. It also features a SUB pre-out for 2.1 channel setups. This all-in-one design suits users seeking high resolution and flexible input options.

Pros

• ESS9038Q2M DAC chip supports DSD256 and PCM ultra-high-resolution audio
• 300W*2 power output using TPA3255 Class D amplifier chipset
• TRS balanced input isolates environmental EMI and eliminates speaker hiss
• Digital VU meter displays input status and volume in real time
• SUB pre-out allows connection to subwoofers for 2.1 channel systems

Cons

• Only supports 2.0 channel stereo output natively
• No built-in phono stage for direct turntable connection
• Physical dimensions are 6.1 x 4.84 x 1.61 inches

Good fit if

• You need a balanced TRS input to reduce noise
• You want a high-resolution DAC with ESS9038Q2M chip
• You plan to add a subwoofer via the SUB pre-out

Skip if

• You require a dedicated 2.1 channel amplifier without extra wiring
• You need a phono preamp for vinyl records
• You prefer a purely analog signal path without digital processing

Verdict: The AIYIMA A80 Bluetooth Stereo DAC Amplifier offers high power and balanced inputs for users prioritizing audio fidelity and input flexibility over integrated subwoofer channels.

7 Best xlr

Fosi Audio Balanced DAC and Headphone Amp

Best for: XLR output and high-res audio

Power Output

640mW@32Ω x2, 2570mW@32Ω x2

Audio Inputs

USB, Optical, Coaxial, RCA

Audio Outputs

4.4mm, 6.35mm, RCA, XLR

DAC Chip

AKM4493SEQ

Connectivity

USB, XLR, Coaxial

Use

Desktop

View on Amazon: Fosi Audio Balanced DAC and Headphone Amp Affiliate link

The Fosi Audio ZH3 is a fully balanced desktop DAC and headphone amplifier. It uses the AKM4493SEQ DAC chip and XMOS XU316 processor to support PCM 768kHz and DSD512. You get high output power via 4.4mm balanced and 6.35mm single-ended jacks. It also features XLR and RCA outputs for preamp use. This unit suits listeners who want high-resolution audio and versatile connectivity for headphones or active speakers.

Pros

• Supports PCM 768kHz and DSD512 with AKM4493SEQ DAC
• High balanced output power of 2570mW@32Ω
• Includes XLR and RCA outputs for preamp flexibility
• Features bass/treble EQ and 6 filter types

Cons

• RCA and XLR output levels differ significantly
• EQ adjustments only apply to headphone output
• No Bluetooth connectivity listed in specifications

Good fit if

• You need XLR outputs for balanced preamp connections
• You require high-resolution audio up to DSD512
• You want customizable sound with multiple filter types

Skip if

• You need wireless Bluetooth connectivity
• You require EQ adjustments for line outputs
• You prefer a smaller footprint under 9 inches

Verdict: The Fosi Audio ZH3 DAC Headphone Amp delivers high-resolution audio and balanced XLR outputs for users seeking precise sound control. It fits listeners who prioritize wired connectivity and detailed audio processing over wireless convenience.

Specifications side by side

Frequently asked questions

See also

• fosi audio 2 1 channel bluetooth amplifier alternatives
• allen heath xone 24c 2 1 channel alternatives