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Learn about everything audiophile — from setups to components

Audiophile Learning Hub

Balanced vs Single-Ended: Does it Matter?

Balanced vs Single-Ended: Does it Matter?

How to Match a DAC and Amplifier

How to Match a DAC and Amplifier

What are NOS Tubes?

What are NOS Tubes?

Apos Blog

Apos June 2026 Sale
Sales Event

Apos June 2026 Sale

Save up to 75% off in Apos's June 2026 Sale from now until June 10th!

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NEW: FIIO FT7 Planar Magnetic Open-Back Headphones
New Product Announcements

NEW: FIIO FT7 Planar Magnetic Open-Back Headphones

The FiiO FT7 is an open-back planar magnetic headphone built around a newly developed 106mm proprietary planar driver. At the center of its design is a 1μm ultra-thin diaphragm developed through tw...

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NEW: VMV D3R FLAGSHIP DESKTOP DAC
New Product Announcements

NEW: VMV D3R FLAGSHIP DESKTOP DAC

The VMV D3R is a desktop DAC and fully balanced analog preamplifier built around a dual-mono ROHM BD34302EKV DAC architecture, a 10MHz OCXO reference clock, and an independent power design with dua...

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NEW: xDuoo A35 Integrated Vacuum Tube Amplifier
New Product Announcements

NEW: xDuoo A35 Integrated Vacuum Tube Amplifier

The xDuoo A35 is a fully integrated vacuum tube amplifier designed for two-channel audio systems. Built around a hand-wired analog circuit, it combines a 12AX7 voltage amplification stage, dual 12A...

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New: xDuoo DP-01 Lossless Music Streamer Player
New Product Announcements

New: xDuoo DP-01 Lossless Music Streamer Player

The xDuoo DP-01 is a desktop network audio streamer designed to add Hi-Res wireless playback and multi-room functionality to your existing audio system. Built around a Cirrus Logic CS43198 DAC and ...

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Apos Marketplace
Apos

Apos Marketplace

Most online selling platforms are massive businesses designed to extract as much value as possible from every transaction. Seller fees keep climbing, policies are becoming increasingly reliant on A...

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NEW: TOPPING DX1 II Gaming Headphone DAC/Amp
New Product Announcements

NEW: TOPPING DX1 II Gaming Headphone DAC/Amp

The Topping DX1 II is a compact desktop DAC and headphone amplifier designed for gaming, music playback, and everyday desktop use. Built around ESS’s ES9039Q2M DAC and a four-channel fully-balanced...

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NEW: xDUOO LINK3 PORTABLE DONGLE DAC/Amp
New Product Announcements

NEW: xDUOO LINK3 PORTABLE DONGLE DAC/Amp

The xDuoo Link3 is a portable USB DAC and headphone amplifier designed for phones, tablets, handheld gaming devices, and computers that need stronger headphone output and higher-performance digital...

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NEW: CAYIN RU3 DONGLE DAC/AMP
New Product Announcements

NEW: CAYIN RU3 DONGLE DAC/AMP

The Cayin RU3 is a portable USB DAC and headphone amplifier dongle built around the ESS ES9069Q DAC and an SPV5068 RISC-V dual-core audio processor. Designed for mobile and desktop use, it supports...

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New from SMSL: VMV P2 MK2 Flagship Headphone Amp
New Product Announcements

New from SMSL: VMV P2 MK2 Flagship Headphone Amp

The VMV P2 MK2 is a fully-balanced desktop headphone amplifier and preamplifier built for demanding headphones, high-sensitivity IEMs, and integrated two-channel systems. Its amplification stage co...

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NEW: SMSL VMV DR2 MK2 Flagship Desktop DAC
New Product Announcements

NEW: SMSL VMV DR2 MK2 Flagship Desktop DAC

The SMSL VMV D2R MK2 is a flagship desktop DAC built around the ROHM BD34302EKV conversion platform, paired with a precision 10MHz OCXO clock system, XMOS XU316 USB processing, and a fully-balanced...

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NEW: TOPPING PRE900 DESKTOP PRE-AMP
New Product Announcements

NEW: TOPPING PRE900 DESKTOP PRE-AMP

The TOPPING Pre900 is a fully-balanced desktop preamplifier designed for dedicated two-channel systems and flagship headphone stacks. Built around a four-channel differential architecture, the Pre9...

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