Buy here (110v version)
Buy here (220v version)
Opamp: OPA275
Tube: 12AU7 (SINO)
Frequency Response: 20-30K Hz
THD+N: less than 0.2%
S/N: more than 95dB
Input impedance: 50K Ohm
Output impedance: 2–2K Ohm headphones
Output signal strength: up to 15 Volts at 32 Ohm
Input: RCA*1
Output: 1/4 headphone jack*1
Dimension: 110mm(W)*50mm(H)*270mm(D), or 4.33inch(W)*1.97inch (H)*10.63inch (D)
Weight: 750g (without power supply)
Acessory: RCA Cleartop 12AU7 tube, 18V AC power supply
Hand built in
Shanghai,
China
Price: 399 usd
Shipping cost in US: 20usd USPS priority mail with tracking
To worldwide: 50usd TNT express mail with tracking
Discussion Thread
Head-Direct EF1
Review by Frederik S
http://www.techpowerup.com/reviews/Head-Direct/EF1/
Review by skylab
http://www.head-fi.org/forums/f5/rev...ne-amp-361841/
Comments from Customers
Comments from headphoneaddict
Head-Direct EF-1
Feedback from North Jersey Meet 7/26/2008
http://www.head-fi.org/forums/4526629-post9.html
http://www.head-fi.org/forums/4529337-post34.html
http://www.head-fi.org/forums/4538671-post54.html
http://www.head-fi.org/forums/4542685-post59.html
