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Learn about everything audiophile — from setups to components

Audiophile Learning Hub

What's a Military-Spec Tube?

What's a Military-Spec Tube?

What's a Tube Plate?

What's a Tube Plate?

What’s a Tube Getter?

What’s a Tube Getter?

Apos Blog

Apos 2025 Black Friday & Cyber Monday Deals List
Sales Event

Apos 2025 Black Friday & Cyber Monday Deals List

The story goes that on the evening of Thanksgiving, many years ago, people woke from their food comas and immediately touched their radio tubes with hands still slick from turkey drippings. The tub...

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New on Apos: Sound Solver Modular Desktop Audio Infrastructure
New Product Announcements

New on Apos: Sound Solver Modular Desktop Audio Infrastructure

Sound Solver is a new line of modular audio furniture built for listeners who take cable routing, component spacing, and mechanical stability as seriously as the electronics themselves. The line in...

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New from FiiO: WARMER R2RnTube Buffer DAC
New Product Announcements

New from FiiO: WARMER R2RnTube Buffer DAC

The FIIO WARMER R2R is a desktop R2R DAC with a tube buffer designed for listeners who want digital playback with a warmer tonal character. It combines a fully-differential 24-bit resistor-array DA...

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ES Lab arrives at Apos
New Product Announcements

ES Lab arrives at Apos

Electrostatic headphones are a small, dedicated corner of the audio world. ES Lab is one of the few companies still building these systems with an obsessive, parts-level focus, and today we’re addi...

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Fall Sale -- Up to 63% Off
Sales Event

Fall Sale -- Up to 63% Off

Tom at Apos here. The leaves are falling, the sun is setting at 4PM, and we’re knocking the dust off our SAD lamps. It’s fall, folks. Love it or hate it, it’s a wonderful time to cozy up to some mu...

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New from Gustard: U26 Digital Interface
New Product Announcements

New from Gustard: U26 Digital Interface

The Gustard U26 is a professional-grade USB digital interface designed to bridge computers and digital-to-analog converters (DACs) with near-zero jitter and exceptional electrical isolation. Co-dev...

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NEW: XDUOO DP-10 DIGITAL MUSIC TRANSPORT
New Product Announcements

NEW: XDUOO DP-10 DIGITAL MUSIC TRANSPORT

The DP-10 is a pure digital music transport designed for modern listeners who mix local archives, streaming services, and network storage. Built on a quad-core ARM Cortex-A55 processor and running ...

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Apos x Community Druid R2R DAC Now Available
New Product Announcements

Apos x Community Druid R2R DAC Now Available

A fully-discrete R2R ladder DAC built for those who value tone, tactility, and the slow craft of listening. The Apos x Community Druid R2R DAC converts digital signals into analog voltage through a...

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New from Audio-Technica: ATH-ADX7000 Headphones
New Product Announcements

New from Audio-Technica: ATH-ADX7000 Headphones

A flagship open-back headphone engineered around a precision-molded 58 mm dynamic driver and a lightweight magnesium frame. The ATH-ADX7000 pursues natural tonal balance, fine transient control, an...

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NEW FROM TOPPING: MINI 300 COMPACT POWER AMP
New Product Announcements

NEW FROM TOPPING: MINI 300 COMPACT POWER AMP

A fully-balanced Class-D power amplifier built for precision listening in small spaces, the Topping Mini 300 brings high-output performance to desks and compact listening environments. Delivering u...

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XDUOO MX-02 HD Bluetooth Audio Transmitter
New Product Announcements

XDUOO MX-02 HD Bluetooth Audio Transmitter

A next-generation HD Bluetooth audio transmitter built for modern systems and legacy sources alike, the xDuoo MX-02 converts wired high-resolution audio into stable, low-latency wireless output. Po...

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New from Meze: 99 Classics 2nd Gen
New Product Announcements

New from Meze: 99 Classics 2nd Gen

A decade after the debut of the original 99 Classics, Meze has returned to refine its signature dynamic headphone. The 2nd Generation maintains the original’s organic sound and craftsmanship—walnut...

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