Famoso amplificatore per cuffie in classe A fornito con il suo tubo a valvole originale 12AU7 con cui già raggiunge ottimi livelli qualitativi, le due valvole acquistate NOS da me e utilizzate solo poche ore ciascuna gli permettono di raggiungere livelli veramente audiophili. Molto divertente poi scambiare tra loro le valvole a poter apprezzare come cambiano le sfumature e il corpo del suono ( ovviamente stravincono a mani basse la Mullard è la RCA rispetto a quella fornita in dotazione). Può anche essere utilizzato come preamplificatore ad un amplificatore finale di potenza . Caratteristiche Tecniche In Put Power: DC24V Sensibilità d'ingresso: 100mV Impedenza d'ingresso: 100KOhm Impedenza di uscita: 20 ~ 600 Ohm Guadagno: 30dB Risposta in frequenza: 10Hz-60KHz +/- 0.25dB Rapporto segnale/rumore: >90dB Gamma dinamica: 84.6dBA (300 ohm) 89.8dBA (33 ohm) THD: 0.016% (300 ohm) 0.45% (33 ohm) IMD + rumore: 0,045 (300 ohm) 0,42 (33ohm)

Famoso amplificatore per cuffie in classe A fornito con il suo tubo a valvole originale 12AU7 con cui già raggiunge ottimi livelli qualitativi, le due valvole acquistate NOS da me e utilizzate solo poche ore ciascuna gli permettono di raggiungere livelli veramente audiophili. Molto divertente poi scambiare tra loro le valvole a poter apprezzare come cambiano le sfumature e il corpo del suono ( ovviamente stravincono a mani basse la Mullard è la RCA rispetto a quella fornita in dotazione). Può anche essere utilizzato come preamplificatore ad un amplificatore finale di potenza . Caratteristiche Tecniche In Put Power: DC24V Sensibilità d'ingresso: 100mV Impedenza d'ingresso: 100KOhm Impedenza di uscita: 20 ~ 600 Ohm Guadagno: 30dB Risposta in frequenza: 10Hz-60KHz +/- 0.25dB Rapporto segnale/rumore: >90dB Gamma dinamica: 84.6dBA (300 ohm) 89.8dBA (33 ohm) THD: 0.016% (300 ohm) 0.45% (33 ohm) IMD + rumore: 0,045 (300 ohm) 0,42 (33ohm)

Famoso amplificatore per cuffie in classe A fornito con il suo tubo a valvole originale 12AU7 con cui già raggiunge ottimi livelli qualitativi, le due valvole acquistate NOS da me e utilizzate solo poche ore ciascuna gli permettono di raggiungere livelli veramente audiophili. Molto divertente poi scambiare tra loro le valvole a poter apprezzare come cambiano le sfumature e il corpo del suono ( ovviamente stravincono a mani basse la Mullard è la RCA rispetto a quella fornita in dotazione). Può anche essere utilizzato come preamplificatore ad un amplificatore finale di potenza . Caratteristiche Tecniche In Put Power: DC24V Sensibilità d'ingresso: 100mV Impedenza d'ingresso: 100KOhm Impedenza di uscita: 20 ~ 600 Ohm Guadagno: 30dB Risposta in frequenza: 10Hz-60KHz +/- 0.25dB Rapporto segnale/rumore: >90dB Gamma dinamica: 84.6dBA (300 ohm) 89.8dBA (33 ohm) THD: 0.016% (300 ohm) 0.45% (33 ohm) IMD + rumore: 0,045 (300 ohm) 0,42 (33ohm)

Bravo Audio Ocean Valve Class A Tube Headphone Amplifier **** REVIEW **** Bravo Audio LTD was established in May 2010. They are a Chinese company developing Tube Headphone AMPs, Tube speaker Amps, USB DACs and Guitar Amps. They were one of the first companies to produce affordable, high quality tube amplifiers. Today I’m reviewing the Bravo Audio Ocean. DisclaimerThe Bravo Ocean was sent to me by Bravo Audio for the purpose of this review. The opinions here are my own based on my experience with the product. I’d like to thank Henry from Bravo Audio for the opportunity to test the Ocean. Bravo Audio websiteBravo Ocean product page Features:Powerful dynamic and sweet TUBE soundWith Shu Guang 12AU7 TUBEMultiple input output option, no more adapters.Aluminum Casing and Beautiful lookingPure Class A Tube amp, No op amp ICLow voltage, good safetyPowerful for any HeadphoneIn Put Power DC24VInput Sensitivity 100mVInput Impedance 100KOhmOut-Put Impedance 20~600 OhmGain 30dBFrequency response 10Hz-60KHz +/- 0.25dBSignal/Noise Ratio >90dBDynamic range 84.6dBA(300 ohm) 89.8dBA(33 ohm)THD 0.016%(300 ohm) 0.45%(33 ohm)IMD + Noise: 0.045(300 ohm) 0.42(33ohm)Dimension 115mm (D) X 82mm (W) X 78mm (H)Input Stereo RCA x1, Stereo 3.5mm x1Output Stereo 6.35mm x1Packaging and accessoriesThe Ocean came in a fairly compact white and blue box with Bravo Audio logo on the front and a QR code on one side. Opening this up I was presented with another plain white box. Inside the second box is the amplifier, seated in some nice, sturdy black foam with the tube pre-installed. There’s also the small power adapter included and a little User’s Manual. BuildThe Ocean is made of a high quality brushed aluminium and feels strong and well built. The blue color is rather striking and is matched by black front and back panels. There’s an U shaped protector that sits over the tube for protection against knocks. While this makes it more difficult for those wanting to roll tubes, I find it a sensible addition and it also adds to the overall aesthetic of the unit. My only gripe with the build is the lack of any feet on the amp. Some simple rubber domes on the bottom would help raise the amp off the surface allowing better airflow and would help to keep temperatures a bit lower. On the front panel we find the power switch, 6.35mm and 3.5mm headphone jacks, a (very bright) red power indicator LED and the volume knob. The power switch is sturdy and the volume knob is smooth with a nice amount of resistance to it.On the back panel is the power socket, a 3.5mm line in, RCA line in and RCA line out. SoundThis is my first experience with a tube amp and the sound is in line with what I was expecting but surprised me as well. It adds a bit of weight to the low end and fills out the sound spectrum with a subtle warmth that’s very pleasing. What surprised me the most however was the fact that very little detail is lost in the music and the highs don’t lose any of their sparkle or impact. The Ocean seems to add some airiness and a nice analog presentation. Equipment used for testingPC/Foobar2000 > Bravo Audio Ocean > Arcam irDAC-IIPC/Foobar2000 > Bravo Audio Ocean > JDS Labs Element Music used for testingArne Domnerus Group “Jazz at the Pawnshop” album Helen Jane Long “Embers” Ludovico Einaudi “Islands” album The Pineapple Theif “Your Wilderness” album Michail Eick “Midwest” album Bass extension is good and the Ocean doesn’t appear to suffer from any ‘slowness’ that is sometimes attributed to tubes. Kick drums retain their punch but sound a little fuller overall.Midrange sound natural and warm making the Ocean great with vocals and classical music. Listening to “Indaco” by Ludovico Einaudi and “Embers” by Helen Jane Long, violins, cellos and piano sound fantastic and rich with good tonality.Highs retain their sparkle as I mentioned above and extension is good. While playing Arne Domnerus Group’s “Barbados” from “Jazz at the Pawshop” cymbals and high hats remain clear throughout with no noticeable roll-off and they don’t get lost in the busy drum solo sections. In useThe aluminium body of the Bravo Ocean does get quite hot but hey, it’s a tube amp so this should be expected.This thing has ‘powah’! Serious, brain melting power. I never take the volume knob past 9 o’clock (7 o’clock is the minimum!) I haven’t tested it with anything super inefficient or with very high Ohms but I’m confident it has the grunt to push any headphone you could throw at it. There is a slight channel imbalance at very low volume but this disappears before 8 o’clock on the knob and was never an issue for me. Unfortunately I don’t really have anything to compare the Ocean with so this review will be a ‘standalone’ effort. ConclusionThis is a good option for anyone who wants to dip their feet into tube amping without having to spend a ton of cash. The Bravo Ocean pairs particularly well with neutral sources and cold or bright headphones but worked well with everything I tried. For those that want to tube roll the Ocean works with 12AU7 tubes which are abundant and can be found quite cheap online. This is a great little amp and is a no-brainer recommendation. The photos are of the EXACT watch you will receive! Please see the pictures for details and ask questionsHave fun Bidding and Bid to WIN !!!******************************************************************************1. All Sales are AS IS and FINAL - ask all your questions before bidding. NO RETURNS unless item is not as described / shown in the photos.2. Payment by PAYPAL ONLY (confirmed address) due within 3 days of auction close, otherwise item will be sold to the next bidder or re-listed.3. Item will be shipped CANADA POST with tracking and real value will be declared for insurance.