Nobsound P10 Mini HiFi Headphone Amplifier and Preamp Review

The Nobsound P10 is a mini headphone amplifier priced at $39.99. It sits on a desk between a source — DAC, PC, phone or CD player — and a pair of headphones, with stereo RCA and 3.5mm AUX inputs and both 6.35mm and 3.5mm headphone outputs.

Output is quoted at 1100mW or more into 32 ohms, with matching for headphones from 24 to 600 ohms, so both sensitive IEMs and demanding over-ears are covered; the maker explicitly lists models such as the HD580, HD600, HD650, K701, K702, Q701, DT880, T70, T90, SR225, SR325 and RS1e as easily driven. A built-in 30V voltage boost raises headroom, which the maker ties to lower distortion and smoother transients. The published specs include a 20-30kHz frequency response, an SNR of at least 110dB and a 30V output voltage swing.

The 3.5mm output can also serve as a preamp output for amplifiers or active speakers, making the P10 useful as a small control hub. Inside are two pluggable NE5532 op-amps that can be swapped for LME49720NA-DIP-8 or other 8-pin dual op-amps with output current over 50mA. The aluminum enclosure measures 78x82x32mm and weighs 210g, and a DC 5V power adapter is included.

Two practical notes from the maker: the RCA and AUX inputs, and the two outputs, all work simultaneously, so do not connect both inputs at once or the signals will mix. And if you swap the power supply, use one rated at least 1A at DC 5V.

Shipping is worldwide with free and expedited options, and cost varies by country. This amp is light, so it ships airmail in an estimated 10-25 days unless expedited service is chosen. Import duties and customs fees are the customer's responsibility. Free 30-day returns with a full refund and a 1-year warranty apply to all items, excluding orders placed by mistake, man-made damage or misuse, subjective change of mind, and anything else outside the warranty terms.