La Figaro 339 Tube Dual Mono Singled-Ended OTL Headphone Amplifier
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| Condition | |
| Payment methods |  |
| Ships from | Milpitas, CA, 95035 |
| Ships to | United States |
| Package dimensions | 22.0" × 18.0" × 11.0" (25.0 lbs.) |
| Shipping carrier | FedEx |
| Shipping cost | $26.54 |
 Average | Research Pricing |
The amplifier works perfectly and I am the original owner who received it drop-shipped from the manufacturer. Conservatively rated as 7/10 due to right volume knob having paint imperfection (the amp was received having it already..). Stock tubes the unit is selling with have less than 30 minutes of runtime. Stock power cables and owner's manual are also included. No original box as it was non-reusable.
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The La Figaro 339 is a high performance dual mono singled-ended output transformerless (OTL) headphone tube amplifier that uses the 6AS7 family power tube.
What does all of that even mean?
Output transformerless is an amplifier design topology where no transformers exist in the output stage. Transformers can be a source of distortion. Eliminating them from the output stage allows for better clarity and higher sound quality. Dual mono refers to an amplifier that has the left and right channel independently built in parallel. That means, two power sources (requiring two power cables), two sets of power and input tubes, two volume control knobs. Singled-ended means this is not a balanced amplifier and is meant to be used with single-ended headphones.
Why would I want two volume knobs?
A lot of reasons actually. Sometimes people don’t have equal hearing capabilities between their left and right ears. Some musical recordings can have channel imbalance problems. Sometimes your left and right vacuum tubes may have variations.
Since this is an OTL amplifier, can it only be used with high impedance headphones?
It’s been well documented that the La Figaro 339 can be an excellent match for lower impedance headphones such as the HiFiMan HE-500’s. Check the head-fi thread (link below) for opinions/reviews on headphone pairings.
La Figaro 339 Head-Fi Discussion Thread
La Figaro 339 Review (6J4P, 6SJ7, 5693, 6Ж4С version)
SPECS
- La Figaro
- Tubes: 2 x OTK2, 2 x 6N5PJ
- Drive impedance range: 32–600 ohms
- Frequency response: 10 Hz–30 kHz +/- 1 dB
- S/N: > 100 dB
- Power output: > 0.6 W
- Dimensions, not including tubes (L x W x H): 14.6 x 10 x 5.2 in (370 x 253 x 132 mm)
- Panel dimensions (L x W x D): 14.6 x 1.9 x 0.2 in (370 x 47 x 5 mm)
- Package weight: 24.25 lbs (11 kg)
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