head-direct-ef1
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Head Direct EF1 [Review]
Review of the Head-Direct EF1 Do note that this is my first review in Head-fi, originally posted in Jaben Forums here: Head Direct EF1 [Review] I've been lusting for my very own tube amplifier after hearing other people's, like the Yamamoto HA-02 and the Little Dot MKIV SE. After much...- Whenesday
- Thread
- head-direct-corporation head-direct-ef1
- Replies: 28
- Forum: Headphone Amps (full-size)
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Head-Direct EF1
It has been some time now since I posted my initial impressions of this new hybrid amplifier from Head-Direct. After considerable listening, and changing opamps to try to best match with the cleartop RCA tube, I have come to the conclusion that this is one of the best-sounding amps that I...- HiFlight
- Thread
- jvc-victor-hp-dx1000 head-direct-corporation head-direct-ef1 sennheiser-hd-650-headphones
- Replies: 29
- Forum: Headphone Amps (full-size)
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Head-Direct EF-1
Today I received my EF1 from Head-Direct. I had first heard the amp at CanJam2008, and was quite impressed with the prototype. The amp is a hybrid that utilizes a single 12AU7 tube. Although I have only accumulated about 3 hours listening time, I did try most of my phones and a variety...- HiFlight
- Thread
- head-direct-corporation head-direct-ef1 hifiman
- Replies: 347
- Forum: Headphone Amps (full-size)
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Head-Direct EF1
Hybrid tube amplifier. Has printed "Hello, head-fier. Because of you, here we are." Specifications: 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...- laurentplop
- Head Gear item
- head-direct-ef1
- Category: Desktop Amps
