The box was opened to check the product is working and then put back in the box. You can see the picture with it functioning and green light in the last image. There's a review of this DAC on YouTube and can be found easily. Any questions then feel free to ask. Will be posted like it's in the pictures.
eBay
Class A Gold Sealed Tube Headphone Power Amplifier 4.4mm Balanced Output 2000mW Power Desktop Headphone Amplifier MUSE02 Op Amp
Aliexpress UK
Mini HiFi headphone amplifier. It is delicate, compact, lightweight and portable, making it convenient to carry. 1 x Headphone Amplifier. The 3.5mm AUX input and output allow the output not only to be louder, but also to produce sharper and more realistic stereo sound without distortion.
eBay
Fiio KA15 Portable Headphone Amplifier HIFI Sound Quality USB DAC Headphone Power Amplifier 3.5/4.4mm Headphone Output Music
Aliexpress UK
【Mini HiFi Headphone Amplifier】It's A Cost-effective Gadget to Improve Sound Quality. It is Delicate, Compact, Lightweight, and Portable that it can be Carry Conveniently. This HiFi Headphone Amplifier supports impedance 16-300 Ω, Delicate, Compact and Portable, Which Make it Convenient to Carry, Can Output Remarkable Sound without Distortion.
eBay
BGGQGG 16-300 ohm HiFi Headphone Earphone Amplifier 3.5mm Jack Aux Portable Adjustable Audio Amp for Mobile Phone Music Player
Aliexpress UK
Tube used less than 200 hours.
eBay
16-300Ω HiFi Headphone Earphone Amplifier 3.5mm Jack Aux Portable Adjustable Class A Audio Amp for Mobile Phone Music Player
Aliexpress UK
SCHIIT MAGNI 3 HEADPHONE AMPLIFIER, GOOD CONDITIONS.
eBay
HA-6A HIEND Tube Headphone/Earphone Amplifier with 4.4mm, 6.35mm and XLR Phone Output. EL34/KT88 Switchable
Aliexpress UK
Adopting innovative circuit design, DC 5-20V wide input working voltage, the amplifier circuit can always work at a high voltage of 26V, and the background noise index is excellent. With wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.
eBay
Juson Audio JTA100 200W Tube Amplifier Vacuum Valve BT5.0 Hifi Stereo USB RCA Opt Remote Phono Headphone 2.1CH for Turntables
Aliexpress UK
The Topping L30 Headphone Amplifier and Preamplifier is a versatile desktop audio amplifier with stereo L/R RCA inputs and outputs. This sleek black device, designed by TOPPING, offers two channels and a single input for high-quality audio processing. With a headphone jack and stereo L/R RCA outputs, the L30 is perfect for enhancing your listening experience with clear and balanced sound. Ideal for audiophiles and music enthusiasts looking for a reliable and compact amplifier solution. Offering balanced line and headphone output comes fully boxed with instructions an UK power supply.
eBay
Fosi Audio T20X MKII BluetoothTube Amplifier 150W*2 Class D Stereo Power Amp For Home Theater Speakers Headphone
Aliexpress UK
Upgraded Features for Versatile Use: The A5 PRO builds on the strengths of the A5, featuring upgraded Bluetooth 5.1 connectivity with a reset button, bass and treble knobs for precise tone adjustments, and a headphone output. It delivers clear, powerful audio, perfect for diverse uses from bedroom movies to desktop setups. Easy Customization with Plug-and-Play Op-Amps: Upgrade your sound effortlessly! Douk Audio A5 PRO includes a tempered glass access panel for quick op-amp replacements, allowing audiophiles to tailor sound profiles without disassembling the unit.
eBay
FiiO KA13 Mini Headphone Amplifier Portable Desktop USB DAC AMP Headphone Power Amplifier 550mW High Power Dual CS43131 Gifts
Aliexpress UK