How to match amplifier tubes portland

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• PajamaGram Family Pajamas Matching Sets - Matching Christmas PJs
• Pedals Pt. 6: What’s All That Noise? Our Trouble Shooting Guide
• McIntosh mc240 tube recommendations.
• "Solid State Amps are finally better than tube amps"
• Best Vintage Kenwood Integrated Amplifier
• Review: Fender Mustang Micro
• The Amp Garage
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PajamaGram Family Pajamas Matching Sets - Matching Christmas PJs

HiFi — is our life. During this time period every home audio amplifier in production contained vacuum tubes. In , John Bardeen and Walter Brattain developed the point transistor, which eventually had a profound effect on the audio world.

This new design is the blueprint for the current generation of transistors, and contains the same basic architecture as a modern component. The age of solid state was ushered in, and vacuum tubes were now considered obsolete.

Over the years there were audio companies that kept this archaic technology alive, and continued to produce vacuum tube amplifiers and pre-amplifiers. The audio community recognized the unique sonic qualities of these components, and continued to buy them despite their hefty price tags. Over the years, the tube audio niche has prospered, and even increased in size. The Shuguang Electron Group Co is one of the few companies that continue to produce vacuum tubes.

It was founded in , and s located in the Hunan province of China. Over the years, Chinese tube manufacturers have worked diligently to improve their products. Several categories of current production tubes now have the reputation of high quality sound, and a reasonable selling price. The Shuguang KT, and the B Meshplate output tubes have a devoted following in the vacuum tube sub-culture. Shuguang has decided to expand their offerings, and has developed a new line of tube electronics.

This amplifier offers the audio enthusiast with limited means the ability to experience the benefits of tube amplification. The output stage of the S-8 utilizes four Shuguang KT tubes. This is a robust tube, and well suited for use in a 50 watt per channel amplifier. What is interesting is the use of octal tubes in the predriver and splitter position.

Companies that produce inexpensive tube gear usually choose 9-pin miniature tubes for these applications. Shuguang has chosen to use the more expensive 6SL7 and 6SN7 tubes.

The vacuum tube community generally agrees that the octal category of tubes is a superior sounding tube to the majority of 9-pin tubes that are currently offered. Shuguang should be given high marks for their decision to use their best tubes in the S Biasing the output tubes of the S-8 is a straightforward task.

A test point and trim pot for each KT is located on the side panel of the amplifier. A multi-meter is needed to determine what level of bias current is being supplied to the tubes.

Use a small screwdriver to rotate the trim pot, and observe the corresponding change on the meter I set the bias to 45 milivolts, and noticed that a small amount of background hum from the amplifier completely disappeared.

Even a novice tube owner should be able to successfully bias this amplifier. Chinese manufacturers have been producing parts and components for other audio manufacturers for several years now. These manufacturers have gained the technical knowledge and experience necessary to develop their own offerings.

The S-8 primarily uses parts produced by Chinese suppliers. The inside of this amp is populated with large electrolytic power supply capacitors, metal film resistors, and several polypropylene capacitors. A high-quality switching device at the input stage is essential to the performance of an amplifier.

This is another positive aspect to the design of the S-8, and should not be overlooked by a potential owner of this amp. The layout and assembly of this integrated is stellar. This amplifier was not slapped together in order to meet a low cost. The neat assembly of the S-8 is a reflection to the skilled workforce that Shuguang employs.

The fit and finish of the S-8 amplifier is significantly better than what is normally seen on inexpensive electronics. All of the panels and screw holes line up correctly, and there are no flaws that can be found in the assembly of this amplifier. The chassis has an attractive paint job that adds to the overall impression of this being a carefully constructed component.

There is an acrylic plate that is fitted around the tube sockets, and is backlight by a pair of blue LED lights. The backlighting is a nice touch that gives the S-8 an unusual appearance. The designers opted to use a set of transformer covers 1. These covers are the same height as the tube cages, and therefore maintain a uniform appearance.

Four small input selector buttons are located on the front panel of the amplifier. All interconnect and speaker wire connections are made on the back panel. The speaker wire binding posts are substantial, and can easily secure stiff, or large cables.

While the Shuguang amplifier may be modestly priced, the visual appearance of this amplifier reflects the attention to detail that has been invested in the manufacturing process.

An integrated amplifier is essentially a pre-amp and power amp built on the same chassis. With the S-8 in my system, all I was required to do is provide a pair of speakers, and a digital source. I have the Eminent Technology LFT speakers on hand for a little while longer, and I decided to use them in this review. My Audio Nirvana Super 12 speakers are far more efficient than the LFT, and do not place a challenging impedance load on the amplifier. A Monarchy AC Regenerator provided clean power to both the digital pieces.

Audio Magic Illusions 4D speaker cables and interconnects made the necessary connections between components. All components that had removable power cords were fitted with Audio Magic Extreme series cords. Over the years audiophiles have appreciated the ability of tube amplifiers to create a realistic presentation of vocals and instruments.

The Shuguang integrated amplifier does a commendable job in these regions, especially when you factor in its affordable price tag. Kralls vocals have a precise presentation that reveals all the subtle variations of her singing style. Thankfully, the S-8 does not add any romantic warmth to the song, which is a common trait of many value priced tube amplifiers. The tonal balance of this amplifier is not ruler flat, it has an elevated region in the upper midrange spectrum 2.

This elevated presence region tends to highlight female vocals, and can be enjoyable to listen to. This peak can be heard when carefully listening to the tone of the piano. A piano is a notoriously difficult instrument to reproduce, and I would say that this amplifier handles this task in a competent manner. I spent several evenings listening to a wide range of female vocalists through the S-8, and my appreciation of the abilities of this amplifier increased at the end of each listening session.

The Shuguang amplifier overall sound can be categorized as quick and lively. I moved my focus to the percussion performance of the Diana Krall song. I could clearly hear the differences between each stick strike on the drum kit.

Also the decay of each strike has clearly recognizable differences. The cymbals have a metallic texture to their sound, which can be difficult to reproduce. There are several challenging passages in this recording, yet this disc does not trip up the Shuguang amplifier. In the critical midrange region, the S-8 performs at a level that belies its modest selling price. The ability to create a multi-layered soundstage is one attribute about tube amplifiers that I have a deep appreciation for.

The combination of tube amplification and planar-magnetic speakers produces an aural illusion that can draw the listener into a performance. In Kate Bush produced an album with a strong Pink Floyd influence that I believe is the pinnacle of her career. This song presents various voices moving throughout the soundstage, a snippet of ringing church bells, and short radio transmissions emanating from a point deep in the soundstage. While this song may be the creation of a talented studio engineer, it offers an unusual aural experience that I find to be captivating.

The Shuguang amplifier and Eminent Technology speaker system is capable of reproducing a soundstage that is equal in depth and width to the one formed by my reference system. This equipment pairing also keeps proper spacing between vocals, instruments, and various sound bites. The LFT speaker system requires a high quality amplifier to fulfill its potential. Clearly the Shuguang S-8 is up to this task.

Deep and powerful bass response is not the forte of lower powered tube amplifiers. High-powered tube amps can do a respectable job at creating subterranean bass notes, although they generally lose out to their solid-state counterparts.

My experience with this amplifier validates this generalization. The Shuguang amplifier does a fine job in the mid bass, and the upper bass region. The Eminent Technology speaker utilizes a 6. In order to properly evaluate this parameter, I swapped in the Audio Nirvana Super 12 speaker system. The inch driver extends deeper into the bass regions, and the higher sensitivity helps out a lower powered tube amp.

Portland Taiko is a North American drum group that I was fortunate enough to attend their performance at a local community college performing arts theatre. Released Spring ] is a piece that features an Odaiko, which is a drum of massive proportions. If I remember correctly, Portland Taikos drum spans nearly 5 feet across, and is has the impact and power unrivaled by any other percussive instrument 3. The Audio Nirvana speaker is not capable of accurately reproducing this instrument, but it makes a valiant attempt at doing so.

The Shuguang S-8 amplifier gets the upper portions of the bass drum right. As the bass notes extend deeper, this amplifier just does not have the power reserves necessary to meet the demands of the music.

Fortunately, the bass just rolls off and diminishes instead of becoming bloated or uncontrolled. When pushed beyond its limits, this amplifier performs gracefully, and does not draw attention to its limitations.

Other musical instruments will not put the demands on the S-8 that the Odaiko does. For instance, this amplifier can believably reproduce an acoustic bass, or bass guitar. If the S-8 is partnered with an appropriate speaker, it is capable of meeting the needs of your average music listener. While the Shuguang amplifier has more than twice the power on tap than the ASL does, it still would benefit from this feature.

A good subwoofer is capable of filling out the lower registers where the S-8 has limited output.

Pedals Pt. 6: What’s All That Noise? Our Trouble Shooting Guide

Best Vintage Kenwood Integrated Amplifier. Kenwood Vintage Integrated Amplifiers. The was similar to the b. Cleaning vintage stereo receivers and amps to

McIntosh mc240 tube recommendations.

The 5F1 Classic Tweed Champ is the king of recording and practice amps. It can be heard on all sorts of other the classic rock and blues cuts too. It has a distinctive aggressive overdrive that is familiar from the moment you plug in. It has a low 5 watts of output so can be fully cranked with ease. The complete amps use the very best parts out there. I have tried them all. Each one is carefully and meticulously built and tested. All amps carry a 90 day warranty on tubes and a two year warranty on everything else.

"Solid State Amps are finally better than tube amps"

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Best Vintage Kenwood Integrated Amplifier

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Review: Fender Mustang Micro

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RELATED VIDEO: How to match a pair of tubes using a TV 7 tube tester - BG055

The profiles in this pack full and open sounding giving these profile a very organic and rootsy feel. I intentionally leaned more heavy on the dynamic mics for a more polished rock sound with a more tame and mix ready bass for these profiles…. Medium Gain and Rock is where this circuit shines. H30 Profiles feature a more focused EQ and slightly different mic placement than the M25 profiles which have more presence and an extended high end.

In May we focused on restringing your guitar, and June was all about pedals. So your rig is making a weird noise? What do you do? There are so many components in a guitar or bass rig: the amp, the speakers, the guitar, and alllll those pedals and cables and power supplies. So many opportunities for weird buzzes and disconnections to happen! I like to do it in this order:. Janie Black has been playing drums and guitar in random local bands for a decade or so, right now the band she plays guitar in is called Planet Damn.

If you buy something using links in our stories, we may earn a commission. This helps support our journalism. Learn more. Gone are the days where you had to shell out cash and muscle to get a hefty practice amp to learn guitar.