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Sensibilidad de entrada: 400mv
Voltaje de salida: 2 V (RMS THD Relación S/N: 94DB.
Respuesta de frecuencia: 12Hz-50KHz (-0.5DB)
Impedancia de entrada: 200 Kohm
Impedancia de salida: 600 ohm.
Entrada CA: 100 V (115 V)
Consumo de energía: 30 W.
Dimensión (W-D-H): 320 x 170 x 120 mm / 12,6 x 6,69 x 4,72 pulgadas (añadir altura del tubo).
Peso neto: 7,72 lb, con un peso de embalaje de 4 kg / 8,82 lb
El paquete incluye:
1 preamplificador de tubo.
1 cable de alimentación
Pedro C.
Comentado en México el 7 de febrero de 2022
Es mi primer aparato de bulbos asi que no tengo punto de comparacion y los comentarios en USA son de que hay que cambiar los bulbos chinos que vienen de fabrica. Para mi suena bien asi como viene, igual sera un tema mas adelante ya que uno nunca esta conforme y siempre quieres mas.
Donny K Dick
Comentado en Canadá el 18 de enero de 2022
Sharp edge along the bottomSmall dents along the top front and back edge.Received small discount. Bought a second and the same damage on both,they only offered me a refund on one of them.It's obvious there is no inspection or quality control.Not to forget when I bought mine they were $497 & the second one was 522 or something like thatOn the possitive it sounds great and lives up to its reviews in that respect. There is quite a hum and apparently they can be unsafe because of a grounding issue.Looks like a 3 prong but the 3rd is not connected to anything. Looks for show .The source select knob is reversed , since they are not labeled you would think to turn it the direction you have stuff wired in the back. You will see it's all reversedI would say get one used or on sale. I paid $500 basically and feel ripped off a little.
Mikekick
Comentado en México el 5 de septiembre de 2021
No se pudo cargar el contenido.
Mr. Steve Sesti
Comentado en los Estados Unidos el 23 de septiembre de 2021
Major hassle. Crazy amount of noise and the sound quality is not noticeably better than a cheaper preamp I was using before.
A. Reynolds
Comentado en Canadá el 6 de marzo de 2020
I was somewhat skeptical of the build quality when I saw the price but, now I've been running it a while with some NOS Mullard ECC82 and ECC83 tubes I had on hand, I must say that I am impressed. Apparently, the circuit is a tweak of a Marantz pre-amp and even though this box lacks tone controls (who needs those anyway?) it works well as a line-stage amp for my new turntable and allows me to use my tube power amp as a true power unit.
s4918
Comentado en los Estados Unidos el 13 de noviembre de 2020
Excellent value for the money. You must to replace the tubes for better ones (apparently the stock rectifiers are OK, though). I have only played the unit with the replacement tubes (I chose two JJ 5751 in lieu of the 12AX7, and two Mullard 12AU7 reissue). It may come down to the tubes or to the unit, but there was initially, at times, a slight shrillness to the trebles which was an issue, but I gave the unit the time to burn in, and the sound settled entirely. It is now very smooth and nice with jazz, small ensembles, classical and voices. The unit must be above a 100 hours right now, and the treble has been smooth for a while. I believe that the bass could be a little bit more present, however this is most likely owing to my choice of tubes. In any event, I recommend that you give this unit a solid chunk of time to burn in before judgment. I purchased this particular preamp because I needed additional RCAs to switch between sources, without the need for a phono section, and I wanted to add a little tube sweetness to my digital amp: my favorite little Kinter 2020a+, a tripath unit I love. The pairing with the Nobsound works very well with my large advents. Highly recommended indeed.
dave99
Comentado en los Estados Unidos el 14 de septiembre de 2020
So, I received this 9/14/2020, in a well packaged box. WIMA and Nichicon caps. JJ 12AU7 tubes, but lower quality 6Z4 rectifier tubes along with the 12AX7 tubes. Point-to point soldering very good. Input selector has illogical wiring for the 4 inputs. Connectors on the back are numbered 4-3-2-1 left to right, but selector is 1-2-3-4 left to right. Crazy. I replaced the the rectifier tubes with some good Russian tubes, and the 12AX7s with NOS 1966 Mullards. The sound is amazing. Now, why is this going to be returned? The left 6Z4 socket is extremely loose and the tube flops back and forth a good 3/8 To 1/2 inch. The right is loose also, but acceptable. This should have easily been caught with a good quality control check, unfortunately it did not. These sockets seem to be available from China only, so I’ll return this one and reorder another.
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