Pre a tubos chino, FX-Audio Tube 01

[icarus-fic 1]

On 6/10/2017 at 18:44, estebanf dijo:

@byjaimex no se si resolviste el problema pero puede ser que los tubos que compraste no son del voltaje indicado. si necesitas tengo unos tubos rusos de repuesto creo el problema es ese, no pasa por el orden tengo dos buffer y los he puesto de diferentes formas en la cadena y no me altera nada  era para ver si cambiaba el sonido y nada

 

Hola estimado muchas gracias por la respuesta y oferta, finalmente en algunas ocasiones logré quitar el ruido pero al parecer es demasiada la interferencia en donde lo tengo ubicado lo termine usando con el chromecastaudio y mejoraba harto el sonido con la opción de rango dinámico activada pero el ruido me seguía molestando porque algunas veces era muy notorio, así que lo saque y está disponible por si alguien lo necesita está con tres tubos de los chinos más dos GE. saludos

[estebanf 264]

hace 9 horas, icarus-fic dijo:

Hola estimado muchas gracias por la respuesta y oferta, finalmente en algunas ocasiones logré quitar el ruido pero al parecer es demasiada la interferencia en donde lo tengo ubicado lo termine usando con el chromecastaudio y mejoraba harto el sonido con la opción de rango dinámico activada pero el ruido me seguía molestando porque algunas veces era muy notorio, así que lo saque y está disponible por si alguien lo necesita está con tres tubos de los chinos más dos GE. saludos

hace 9 horas, icarus-fic dijo:

Hola estimado muchas gracias por la respuesta y oferta, finalmente en algunas ocasiones logré quitar el ruido pero al parecer es demasiada la interferencia en donde lo tengo ubicado lo termine usando con el chromecastaudio y mejoraba harto el sonido con la opción de rango dinámico activada pero el ruido me seguía molestando porque algunas veces era muy notorio, así que lo saque y está disponible por si alguien lo necesita está con tres tubos de los chinos más dos GE. saludos

chuuta que mala nunca tube problema con el buffer. l otro puede ser el transformador no se si venia con el o tu aca le compraste uno, en todo caso se venden rapido en  clasificados s2s

On 21/2/2017 at 17:04, hectori dijo:

Genial! en la familia de los 6AK5, los preferidos son los Western Electric y los Raytheon de estampado amarillo, hay un compleo review en Head-Fi de las distintas marcas, ojo que en este, salen mal parados debido a que quien armó el review tuvo la mala suerte de que los pares que tenia estaban microfónicos...pero en buen estado, son magnificos, hay muchos otros reviews en la misma página.

Hay 700 páginas de Reviews de valvulas : http://www.head-fi.org/t/563884/little-dot-tube-amps-vacuum-tube-rolling-guide

EF95 FAMILY

 

3.1 Overview

 

The EF95 family is the most versatile and widely available of the three families of tubes reviewed in this guide. I recommend beginning users to start tube rolling within this family because it has the most variety of manufacturers and models to choose from, and gives you the most sound for your money (particularly starting with the 6ZH1P-EV). Little Dot Mk-series amps are factory configured to use this family and the Darkvoice 332/3322 amps also use this tube exclusively.

 

Also known as: EF95, 5654, 6AK5, 6J1, 6ZH1P, 403B, CV850, M8100, 6DL5, DP61, PM05

 

3.2 Amperex 5654

 

First impression of these tubes came off a bit shy sounding at the 10 hour mark. With about 50 hours of burn-in time, the sound eventually matured and developed a good amount of detail without being overly bright or edgy. My main reservations about these tubes are its lack of bass ‘oomph’ and its upper-mids is too forward sounding and smothers the top-octave ‘air’, robbing the overall sound of a sense of immediacy.

                Bass: 12

                Mid 18

                Treble: 15

                Detail: 16

                Soundstage: 12

                Total: 73/100

 

3.3 Chinese 6J1

 

Manufactured at the Shuguang factory in China, these tubes are sometimes used as stock driver tubes for lower end LD amps and can be found cheaply from various overseas sellers on eBay (usually not matched). Sonically, these tubes are too ‘bright’ from the beginning, bass is muddy and undefined and vocals are masked by overpowering treble notes (which improves a bit as the tubes burn in), but in the end these tubes failed to approximate the ‘Hi-Fi’ sound and just do not do justice to the otherwise great sounding LD amps.

                Bass: 10

                Mid: 11

                Treble: 13

                Detail: 13

                Soundstage: 12

                Total: 59/100

 

3.4 Collins 6AK5

 

These hard to find tubes have smooth and full bodied bass, somewhat recessed mids and a good sense of imaging.  They have a peculiar ‘congested’ sound during complex passages such as full orchestral music and suffers from a smidge of sibilance.

                Bass: 16

                Mid: 13

                Treble: 15

                Detail: 12

                Soundstage: 15

                Total: 68/100

 

3.5 GE 5654

 

GE is one of the most widely available manufacturer of the EF95 family of tubes and comes stock with many LD amps.  Sound quality is average with a more upfront in-your-face sound.  Listening to the notoriously close-mic’d Jack Johnson’s “On and On” can be a claustrophobic experience with these tubes due to its up front qualities but chamber music is complimentary.

                Bass: 12

                Mid: 15

                Treble: 13

                Detail: 13

                Soundstage: 10

                Total: 63/100

 

3.6 GE 5Star 5654

 

These hand-picked broadcast quality tubes are surprisingly unlike the standard GE tubes. I like these tubes for their evenness and silence which really lets you focus your mind on the music, and their soundstage is even and expansive as long as you have a matched pair.  I find myself tapping my toes listening to music with these tubes.

                Bass: 17

                Mid: 16

                Treble: 17

                Detail: 19

                Soundstage: 18

                Total: 87/100

 

3.7 GE JAN5654W

 

These military spec tubes really have a sense of quality construction about them.  The first thing I noticed about these tubes when they arrived is just how neat and solid its internals look.  Their sound doesn’t disappoint either with incredibly good treble extension, clarity and quietness that reminds me of the GE 5 Star tubes reviewed above.  Its upfront sound is in keeping with the GE family sound, violins sounded desperately beautiful with these tubes. In the bass department, PRAT and OOMPH are the first adjectives that come to mind. Compared to the Mullard M8100, these tubes are airier and their bass not as soupy.  These tubes also have exceptionally clean vocal and lends itself well to modern jazz recordings such as Eva Cassidy’s “Live at Blues Valley” where the reverb of the room is clearly audible.

                Bass: 19

                Mid: 19

                Treble: 20

                Detail: 18

                Soundstage: 17

                Total: 93/100

 

3.8 Mullard M8100 / CV4010

 

The Mullard house sound is much warmer compared to the GE tubes reviewed above. The warm tone is especially complimentary to female vocals where sultry voices such as Norah Jones and Dianna Krell’s come across as positively seductive. With rock music, the full body bass has a visceral impact.  These tubes don’t have the sweetest treble of the EF95 family (that title goes to the 6ZH1P-EV), but they nevertheless manage to give the music a sense of presence and body. Trumpets and strings unfortunately don’t have the most prat or the most natural decay but these are sins of omission that I could happily live with.

                Bass: 20

                Mid: 20

                Treble: 18

                Detail: 18

                Soundstage: 18

                Total: 94/100

 

3.9 RCA 5654 (Black Plate)

 

The first thing you will notice about these tubes is how solid their bass response is.  If Mullard bass is too warm for you then definitely give these RCA black plates a try.  RCA cranked these out by the thousands back in the day, and in my experience they are very easy to find.  These tubes have a nice soundstage presentation and are extraordinarily good for classical music.  The sound has good balance overall and improves with burn-in.  They have the great quality of getting out of the way of the music and are a great middle-of-the-road choice.

                Bass: 19

                Mid: 17

                Treble: 16

                Detail: 19

                Soundstage: 16

                Total: 87/100

 

3.10 Voshkod 6ZH1P-EV

 

I first became intrigued about these Russian tubes when several head-fi members began posting wildly contradictory comments about them – so dissimilar were people’s impressions about these tubes that I just had to find out for myself what they really sound like.  After some research I discovered that many versions of this tube were manufactured in various factories in the former USSR, and by far the best sounding version is the Voshkod 6ZH1P-EV which was made for cold war rockets.  I got my matched pair from Yen Audio and first impression out of the package proved that in keeping with its military heritage, these tubes are some of the most solidly constructed tubes I’ve ever encountered. Sonically, these tubes pleasantly surprised me with their stunningly clear and transparent treble and authoritative sounding bass that compliments my HD650 as well as my Grados.  Vocals are similarly impressive with a level of realism that is what I love about the ‘tube sound’. These are my favorite EF95 tubes.

                Bass: 19

                Mid: 20

                Treble: 19

                Detail: 19

                Soundstage: 18

                Total: 95/100

 

3.11 Sylvania 5654

 

Reserved sounding tube at first and needs burn in. Good balance of frequency extremes and good imaging. Effortless sound quality during complex passages, good decay of cymbals.

                Bass: 16

                Mid: 15

                Treble: 17

                Detail: 18

                Soundstage: 18

                Total: 84/100

 

3.12 Sylvania Gold Brand 5654

 

These are the best tubes Sylvania made and are easy to identify as they have golden pins. They are warmer sounding than GE and RCA tubes, and have slightly better vocal than Mullards but sacrifice some bass performance. My matched pair required a lot of burn in and sounded much better after 20 hours or so. The thing that stands out about these tubes is their razor sharp 3D imaging, and their outstanding balance of detail and warmth without compromising either quality.

                Bass: 16

                Mid: 19

                Treble: 18

                Detail: 20

                Soundstage: 18

                Total: 91/100

 

3.13 Tung-Sol 6AK5

 

The famed Tung-Sol has always been one of my favorite vacuum tube brands since day one of my tube rolling journey.  The Tung-Sol 6AK5 didn’t disappoint, offering a smooth laid back sound. It has the richness and sweetness of the Mullard midrange but with better frequency extension in the top end. If Mullards are too warm for you then give this tube a try.

                Bass: 18

                Mid: 18

                Treble: 17

                Detail: 19

                Soundstage: 19

                Total: 91/100

 

3.14 Western Electric 403B

 

The WE 403B has long been the standard bearer of 403B tubes.  Unfortunately they suffer from microphonic issues and all 3 of my matched pairs have audible chime-like ringing during power cycles.  I really wanted to like them as WE has a good reputation, but extended listening to these tubes always caused fatigue to my ears due to a high frequency glare and sibilance.

                Bass: 12

                Mid: 12

                Treble: 08

                Detail: 15

                Soundstage: 10

                Total: 57/100

 

3.15 Westinghouse 5654

 

These tubes really like instrumentals and has great PRAT with guitar and piano recordings.  Vocals are recessed sounding and anemic sounding bass make these a bad pairing for rock 'n roll music but they have their charm with jazz recordings.

                Bass: 10

                Mid: 12

                Treble: 17

                Detail: 17

                Soundstage: 18

                Total: 74/100

que buen dato

[icarus-fic 1]

hace 1 hora, estebanf dijo:

chuuta que mala nunca tube problema con el buffer. l otro puede ser el transformador no se si venia con el o tu aca le compraste uno, en todo caso se venden rapido en  clasificados s2s

que buen dato

Muchas gracias, lo he usado solo con el transformador original, intentare probando con otro a ver que tal, pero lo mas probable que pase a clasificados.

Saludos

hace 1 hora, estebanf dijo:

chuuta que mala nunca tube problema con el buffer. l otro puede ser el transformador no se si venia con el o tu aca le compraste uno, en todo caso se venden rapido en  clasificados s2s

que buen dato

[Fingolfin.cl 26]

yo tuve ese ruido (como un "rrrrrrrrrrr"?) y tuve que cambiar los cables rca.

Enviado desde mi SM-G950F mediante Tapatalk

[MartinV56 866]

LLegó el otro pre conectado al Dynaco 6L6

 

hace 4 horas, Fingolfin.cl dijo:

yo tuve ese ruido (como un "rrrrrrrrrrr"?) y tuve que cambiar los cables rca.

Enviado desde mi SM-G950F mediante Tapatalk

Cambia polaridad y seguramente desaparece el "rrrrrrrrrr", Suerte y Saludos

 

Editado October 10, 2017 at 17:36 por MartinV56

[Fingolfin.cl 26]

LLegó el otro pre conectado al Dynaco 6L6

 

Cambia polaridad y seguramente desaparece el "rrrrrrrrrr", Suerte y Saludos

ya se fué :)

Enviado desde mi SM-G950F mediante Tapatalk

[Fingolfin.cl 26]

pero para averiguar, por cambiar la polaridad quieres decir colocar el cable rojo en la entrada blanca y viceversa?

[MartinV56 866]

hace 15 minutos, Fingolfin.cl dijo:

pero para averiguar, por cambiar la polaridad quieres decir colocar el cable rojo en la entrada blanca y viceversa?

polaridad AC-DC inviertes enchufe

[Fingolfin.cl 26]

polaridad AC-DC inviertes enchufe

lo tomo y giro en 180?

Enviado desde mi SM-G950F mediante Tapatalk

[MartinV56 866]

Si

hace 1 minuto, Fingolfin.cl dijo:

lo tomo y giro en 180?

Enviado desde mi SM-G950F mediante Tapatalk

inviertes el enchufe  y conectas en el tomacorriente

[MartinV56 866]

Muy buen match la planta de potencia  6L6  con  el "chinito" 6J1

[DARRIEU 1]

hola, una consulta sobre este fx preamplificador, ¿se puede conectar entre un music player y amplificador integrado? o solo se debe acupar con fuente-preamplificador-power???

[DARRIEU 1]

hago esta consulta ya que no me gustaria danar el integrado!!

 

[DARRIEU 1]

Me ayudan por favor 

[MartinV56 866]

hace 7 minutos, DARRIEU dijo:

Me ayudan por favor 

, A que te refieres con music player? presumo que es una  fuente ( cd player,  HTPC)?, a que amplificador lo vas a conectar?

[DARRIEU 1]

hace 18 minutos, DARRIEU dijo:

Me ayudan por favor 

hola a un atoll in50

 

hace 18 minutos, DARRIEU dijo:

Me ayudan por favor 

Me ayudan por favor 

[DARRIEU 1]

es network player cambridge es la fuente

 

[DARRIEU 1]

lo consulto, pues ocupé el fx audio como pre amplificador y no me gustó el resultado

luego lo hice entre la fuente y la entrada aux del ampli y sonaba mejor....

[strangiato 245]

El aparato no es un pre amplificador mas bien es un Buffer que sirve para " colorear" ( mejorar , subir , ) la señal de audio entre la fuente y el ampli 

 

Saludos 

[MartinV56 866]

hace 11 minutos, strangiato dijo:

El aparato no es un pre amplificador mas bien es un Buffer que sirve para " colorear" ( mejorar , subir , ) la señal de audio entre la fuente y el ampli 

 

Saludos 

No señor, es pre de linea, tiene ganancia