Top Apos Deals for September 2025

Our best-selling amplifier "Mr. Clean." "The Giant Killer." "The Best Amp Ever." These are a few of nicknames the TOPPING A90, our best-selling amplifier, has gained since its release. At its most basic level, it's a balanced amp and pre-amp with tremendously clean and powerful output. At its broadest level, it's become the benchmark by which all other solid state amplifiers below $1,000 are judged. Calling all cans Planar magnetic, electrostatic, dynamic drivers, IEMs-pick your poison, the A90 can handle it. Thanks to its NFCA modules, three-step gain switch, and excellent AC and DC performance, the A90 can push loads of power into high-impedance full-sized headphones or pare that power back in order to drive sensitive IEMs. And with an ultra-low noise rating and high dynamic range, the A90 does it all without producing any audible noise. Pre-amp mode With the A90 in pre-amp mode, connect a power amplifier to drive bookshelf, desktop, or floor speakers. You can also connect the A90 to the D90SE DAC in pre-amp mode to create a complete high-end sound system. Product highlights Headphone amp and pre-amp 4-pin XLR, 4.4 balanced, and 6.35mm outputs 3-step gain switch Can drive full-sized headphones and sensitive IEMs NFCA modules THD+N:

Dang it. We hate being the bearers of bad news, but the SMSL SP200 has reached its end of life. Luckily, we have a great alternative for you: the SMSL SH-9 THX AAA-888 headphone amplifier. The SMSL SP200 THX Headphone Amp is the newest product in the SMSL lineup with the top of the line audiophile high power grade THX AAA-888 technology. This technology allows for the highest fidelity with extreme output power and ultra-low crosstalk for a high-quality, low distortion sound. This amp is versatile and can be used to drive a variety of headsets/earbuds including those that have high impedance, require high current, or need high sensitivity. The THX patented AAATM 888 is a linear bipolar amplifier circuit with feedback error correction. It eliminates the distortion mechanism of traditional amplifier circuits, reducing harmonics, intermodulation, and cross-distortion by as much as 40 dBs. This creates a realistic fatigue-free listening experience. The SP200 comes with a built-in AC power supply and is equipped with XLR and RCA inputs. The front panel has XLR and quarter inch jack outputs, options for switching between different inputs, and choosing high or low gain. A detailed review for the SP200 and its performance is provided by Amir on Audio Science Review. The SP200 has a balanced stereo headphone output, a balanced stereo line input, comes with high precision resistors for temperature stability, and a patented 24W high-efficiency ultra-low noise power supply. Its measured distortion is as low as 0.000078% with a signal-to-noise ratio of 122.2 dB. The CNC aluminum alloy shell chassis reduces the interference and noise to improve the amplifier's performance. Features: THX AAA-888 Technology Ultra-Compact design - great for desktop Toggle switch for operation, input selection, and gain control Balanced stereo headphone output Balanced stereo line input High precision resistors for temperature stability Pop-less design with high quality relays Selected high precision low-distortion volume potentiometer Full protection with DC, over-voltage, over-current, and short-circuit Thermal protection on headphone amplifier High-efficiency ultra-low noise power supply Specs: Inputs: Balanced x 1, Unbalanced x 1 Outputs: Balanced x 1, Unbalanced x 1 Output Power: 6W x 2 (16ohm) 3W x 2 (32ohm) 440mW x 2 (300ohm) 220mW x 2 (600ohm) SNR: 130dB, A-Weighted Output Noise: 2.8uV, A-Weighted THD+N: -122dB, 0.00007% (1kHz, 32ohm) THD+N: -117dB, 0.00013% (20 - 20kHz, 32ohm, -3dB) THD: -125dB, 0.00006% (1kHz, 16ohm, -3dB) Output Impedance: Near 0ohm Frequency Response: 0.1Hz - 500kHz(-3dB) Gain: Low(+6dB), High(+18dB) Power Supply Voltage/Frequency: AC100-240V, 50-60 Hz Power Consumption (EN60065): 24W Power Consumption in Standby Mode: < 0.1W Size: 160 x 149 x 73 mm Weight: 772g Featured reviews "Low noise plus a ton of power is an awesome combination." -El Jefe Reviews "Very very clean." -Max Settings

The next generation of xDuoo DAC/Amps The TA-22 is a desktop DAC and balanced tube headphone amplifier that provides high performance USB, optical, coaxial, and Bluetooth 5.1 audio decoding. Combining an XMOS XU208 USB chip and dual ESS D/A chips, the TA-22 supports PCM 32-bit/384kHz and DSD256, as well as MQA rendering. Connect your laptop, phone, or tablet via Bluetooth 5.1 and enjoy audiophile-grade Bluetooth codecs, like LDAC and aptX HD. 3000mW balanced output Plug in your balanced headphones into the 4-pin XLR and 4.4 balanced outputs to enjoy up to 3000mW of output power. This much power can easily drive headphones with impedance from 16-600Ω. Bluetooth 5.1 The TA-22 supports high-end Bluetooth 5.1 codecs like LDAC, Qualcomm aptX, and aptX HD. With playback support for 24-bit tracks and transmission up to 50 feet away, it'll help you cut cords without sacrificing quality. Dual ES9038Q2M DAC chips Two ESS SABRE DAC chips process the left and right channels independently. These 32-bit audiophile-grade DAC chips decode 32-bit/384kHz PCM audio with a signal-to-noise ratio of up to 118dB. Tube + transistor hybrid amp structure Using a hybrid amp structure, the TA-22 offers the best of both tube and transistor worlds. With strong output power, the transistors can drive any sort of headphone, while dual 12AU7 tube amplification provides musicality, warmth, and smoothness. Japanese capacitance The TA-22 uses a series of Japanese ELNA and NICHICON capacitances, which give the TA-22 a smooth and warm presentation with transparent high frequencies. Product highlights Balanced output HD Bluetooth ES9038Q2M x2 D/A chips Tube amp OLED display DSD256 PCM 32-bit/384kHz MQA 32-bit/384kHz renderer 3000mW output power Specs Screen: 3.2" OLED Power Supply: (AC100-120V/220-240V) Compliant OS: Linux, Window, Macos, IOS, Android Sampling Rate Support of USB IN: PCM: 16-32Bit/44.1-384kHz DSD: DSD64-DSD256 MQA(Renderer): 44.1-384kHz Sampling Rate Support of OPT/COAX IN: PCM. 16-24Bit/44.1-384kHz DSD: DSD64-DSD128 (DOP) Support Format of Bluetooth: SBC. AAC, atpX, atpX LL, atpX HD, LDAC Parameters of 6.5mm Headphone: Output Power: 1500mW (32Ω) Frequency Response: 20Hz-60kHz (0.5dB) THD+N:

Big power, small spaces The SMSL DA-6 is a power amplifier that outputs a serious 70W x2 of power but takes up less than six inches of space on its longest side. A member of the SMSL "-6" family, it is made to stack with the SMSL SU-6 Mini Desktop DAC and SMSL SH-6 Mini Desktop Amp. Together, they create a formidable audiophile-grade stack at an entry-level price. Aluminum alloy CNC shell The SMSL DA-6 is made with an aluminum alloy CNC shell. Perhaps the greatest chassis material in the world, it is strong, lightweight, and excellent at heat dissipation. Multiple EQ presets Make sound signature adjustments on the fly with the DA-6's built-in EQ presets. Options like "super bass effect," "soft effect," and "clear effect" can correct sub-par speakers or accentuate certain frequencies when you need it. Product highlights German Infineon new silicon carbide amplifier chip Electronic volume control Multiple EQ presets Three analog stereo effects Large power adapter High quality gold-plated audio connectors CNC precision chassis Remote control Specs Output power: 70W x2 (4Ω) Frequency response: 20Hz - 40kHz Bass or treble gain: -14dB - 14dB THD+N: 0.004% Channel separation: 91dB (1kHz) Input sensitivity: 400Vrms SNR: 103dB Maximum output voltage Low gain: 2Vrms High gain: 1.2Vrms Power consumption: 36W Dimensions: 5.5" x 1.1" x 4.3" (140mm x 28mm x 110mm) Weight: 0.77lbs (0.35kg) Pairs well with SMSL SU-6 Mini Desktop DAC SMSL SH-6 Mini Desktop Amp