TU-HP01 is working very well on IPad 4
Product Features
- Battery operated vacuum tube Headphone amp (Raytheon 6418)
- Minimized microphone noise
- Start up only in a few second
- OP-amp exchangeable
- Dual supply for OP-amp
- Gain Switch
- Almost no pop noise upon power ON
Specifications
Vacuum tube : Raytheon 6418 x 2pcs
Frequency response : 10Hz - 65kHz
Headphone impedance : 16 - 32ohm recommended
Input terminal : 3.5mm stereo mini jack
Output terminal : 3.5mm stereo mini jack
Power supply : AAA dry cell battery x 4pcs or AAA Ni-MH rechargeable
battery x 4pcs (Battery life : Approx.10 hours)
Dimensions : W78 x H16 x D117 mm (excl. projections)
Weight : Approx. 125g (excl. batteries
Contents:
- Amplifier TU-HP01
- Stereo mini plug cord (red color)
- Hexagon wrench (1.5mm)
- Extra Front panel
- OP-amp OPA 2604 FET (Sound with layers still pure and clear)
- OP-amp MUSES8820 Bipolar (High resolution and Dynamic)
The OP-amp can be remove from the IC socket and exchange with other Op-amp so that you can enjoy the difference in sound by various Op-amp.
The following OP-amp can work well with TU-HP01
MUSES8820 (only MUSES series)
OPA2604
LME49720
MUSES8920
MUSES02
NJM4580
NJM4560
NJM3414
Vacuum Tube - Raytheon 6418
