“This is a very nice sounding amplifiers better than what you think about it. Please do not judge it by its price is a huge bargain for its price. It could measure up to a Woo audio Wa6 which is a decent amplifiers. Many amplifiers that are more expensive than this, could not even match its performance. ” --jamesng45678
“ Porta Tube (GoVibe) - Something Really Special. I've never experienced a tube amp before - so all I can do (for now) is compare this to my E11 (portable) and E9 (desktop) setup. For all three amps I am using the same source (iPod Touch G4 via LOD). I'm comparing using a set of DT880 Pros (250 ohm), and I'll also...” --Brooko
Built-in lithium-polymer battery Power Supply: USB-DAC that corresponds to the digital audio input and output 96kHz/24bit upsampled to 192kHz: DAC Connectors: USB mini socket × 1, AC adapter for charging Accessories: The Case of felt, USB mini socket × 1, AC adapter for charging
A tiny budget portable headphone amplifier from on Jabens house brands.
porta-tube Dimension 91mm x 45mm x 25mm Weight 80g excl. Batteries Frequency Response 10~100KHz (±1dB) Output Power @ 32Ω 120mW Gain 9/14/19dB Bass Boost 0~10dB Treble Boost - Signal-to-Noise Ratio +A 102dB Features Portable amp with bass adjustment, gain adjustment function and the following main push 300Ω headphones.