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Oldfield Marquis 15 Brown Ostrich 1x12 Combo - Used  From Oldfield

 Oldfield's EL84 tone monster at a pre-loved price!  


Our product photos are the actual, specific serial number for sale!

This specific item was photographed by us here in Durham, North Carolina. We are a very small team dedicated to providing you the most accurate photos possible, through our obsessive focus - individually photographing nearly everything that comes through the door. Questions about what you see? Want more information, photos, or just a friendly conversation with someone that cares and who has actually had their hands on this exact item? Contact us now!

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Sound Pure's dedication to pre-owned products is unprecedented in the industry. We are a small team of dedicated experts that buys, trades, and consigns. We are trusted by customers all over the world. Our curated collection, is thoroughly tested and inspected by some of the best in the business. Our inventory is constantly changing, ever-evolving, with some items sold before reaching the website. Looking for something specific? Have questions about this product's condition or history? Want more photos, or to simply chat with an expert who's had his hands on this actual piece? Contact us now.
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Oldfield Tube Amplification

"Gone, Baby, Gone"

This one is sold. Don't miss the next one. Some things never even make it to the site so stay up to date on our used collection.

We get in many oddities, rare and vintage products, most of which go fast. If you're on the hunt for something specific, something unique, or something priced right, let us notify you on our used collection before the items even hit the site.

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What We Think

Condition: Used, Excellent

Manufacturer's Description from Oldfield

The 6715 blends the unmistakable EL84 tone from the power section with an EF86 preamp to produce a tonal character that is both unique and familiar.  With more headroom than you typically find in an EL84 based amplifier, the 6715 delivers some of the most beautiful clean tones you can imagine and when pushed can deliver warm, creamy distortion or grunge grind.  Equipped with a 12-way macro tone selector the amp allows the player to dial up a tonal flavor to best match the instrument being used with just a simple twist of a dial. Fine adjustments to tone are made through the availability of a full tone stack and top cut control. Talk about versatility! This amplifier is well suited for Country, Jazz, Blues and Rock players and is available with optional power scaling and effects loop.

Oldfield Tube Amplification

About Manufacturer

At Oldfield Tube Amplification we focus on tone, quality and customer relationships. Our goal is to inspire you.

We hand-craft every amplifier, using vacuum tube circuitry and the highest quality components. And because we understand that your approach to music is uniquely your own, our service always begins with a customer consultation. We take pride in providing you with a perfectly nuanced amplifier designed to inspire you to your musically best.

Already playing through a vintage amplifier? You will appreciate our restoration services--performed with thesame commitment to quality and tone that we dedicate to our own hand-built amplifiers. 

Whether you are a national recording artist or enjoy practicing your favorite songs at home, you can rely on the Oldfield difference. Our amplifiers are built to last a lifetime.

See what the Oldfield difference can do for you.



Serial Number: M15-200310001

One Input Channel with Input Jacks for Normal and High Gain Instruments

18 Watts Output Power into 8Ω (when operated with the power scaling set to full)

All Tube, Hand-wired Circuitry 

EL84 Power Amp Tubes 

EF86 Preamp Tube 

12AX7 Phase–splitter Tube

EZ81 Rectifier Tube

Finger–jointed Cabinet

Front Control Panel: Input (High and Low Gain), Preamp Gain, 12 Position VariTone, Treble, Middle, Bass, and Master Volume

Rear Control Panel: Fuse, Rectifier Selection Switch, Power Level, Serial Effects Loop, Impedance Selector, Speaker Outs

Speakers: Celestion Blue 

Preamp: EF86, 12AU7, 12AX7 

Power: 2 x EL84

Bias: Cathode

Rectifier: EZ81

Phase Inverter: 12AX7 (long-tailed)