The Analog Man DS-1 Pro Midrange Mod is a modified BOSS DS-1 distortion pedal built by Analog Man, the New York shop run by Mike Piera. It takes a stock DS-1, replaces the stock components with high-grade audio parts, re-equalizes the pedal for a punchier sound, removes the inline chip and fits a JRC opamp chip in its place, and adds a Midrange knob the stock pedal does not have1.
The point of all this is the DS-1's stock voicing. Oscar Jordan, reviewing the pedal for Premier Guitar, described the stock version as having "nasty high frequencies and an ice pick sensation," and said the modification aims to rid the DS-1 of exactly that, replacing it with "thickness, warmth and soul"2.
What changes from a stock BOSS DS-1
The DS-1 has been modified by shops for decades. On That Pedal Show, Mick and Dan noted that "analog man and keely and jhs and a bunch of other guys and girls do mods to their ds1"3, and MusicRadar's history of the pedal likewise records that "boutique builders such as Keeley and Analog Man have put their own stamp on the circuit"4. GuitarPCB's technical analysis of the circuit lists Analog Man among the popular mods that make the 2000-era DS-1's tone thicker, stronger and more versatile5.
Analog Man's version makes several specific changes:
- Stock components are replaced with high-grade audio parts1
- The pedal is re-equalized for a punchier sound1
- The inline chip is removed and replaced with a JRC opamp chip1
- A Midrange knob is added1
One thing worth knowing if you plan to send in a pedal: the DS-1's board changed from through-hole to surface mount construction halfway through 2016, as Dan and Mick explained on That Pedal Show6. The factory op-amp has also changed several times over the years, which GuitarPCB attributes entirely to manufacturing stock and part obsolescence rather than sound decisions5.
The modification-only price of $90 applies to a DS-1 you send in. Because the board went surface mount partway through 2016, which DS-1 you have affects what a mod shop can do with it61.
What the Midrange knob does
The stock DS-1 has Tone, Distortion and Level controls, but no dedicated midrange shaping. The Midrange knob on this mod fills that gap. Premier Guitar's reviewer found that "with the addition of the Midrange knob, players also have the option of dialing in classic tube amp sounds or more modern, 'scooped' tones"1. That is the practical difference from the standard DS-1 Pro Mod: same parts upgrade and re-equalization, plus a mid control.
How it differs from the Analog Man DS-1 Pro Mod
The DS-1 Pro Mod is Analog Man's base modification of the BOSS DS-1, replacing stock components with high-grade audio parts and re-equalizing the pedal for a punchier sound2. The Pro Midrange Mod is that same package with the Midrange knob added1. Jordan, who already owned the Pro Mod, described the difference in sound: "The first thing that came to mind upon hearing the modified pedal was the word creamy," finding the Midrange version warmer than the DS-1 Pro Mod and "in a totally different solar system than the stock version"2.
What reviewers said
Premier Guitar's 2021 review called it a versatile distortion pedal with plenty of warmth, finding "the versatility to move between modern metal sounds and vintage-sounding gain with little effort," and noting it also worked for subtler rhythm tones and blues-rock1. The reviewer's ultimate test was a weekly gig covering Ernie Isley, Eddie Hazel, Carlos Santana and Prince material1.
Jordan's earlier 2008 review for Premier Guitar reached a similar conclusion from a different angle, praising the warmth and thickness the mod brings to a pedal he found harsh in stock form2.
"It has the versatility to move between modern metal sounds and vintage-sounding gain with little effort."
On That Pedal Show, Dan and Mick pointed to the mod as the answer to the stock DS-1's midrange, noting "there's a great Analog Man Mod that gives you a different that gives you a mid-range control actually"6.
Separately, Analog Man's own news page records that Sid McGinnis used the shop's DS-1/Pro pedal with his old 50s Strat and SID TONE tweed deluxe amp7.
Videos
Erik Z
Joong Mo Do
Guitar Tone Pro
Questions
Can I send my own BOSS DS-1 to Analog Man for the Midrange Mod?
Yes. Analog Man offers the Midrange Mod as a modification service on a BOSS DS-1 you supply, listed at $90 for the modification alone. Alternatively, you can buy a complete BOSS DS-1/Pro with the Midrange knob already installed for $130. Note that the DS-1's board changed from through-hole to surface mount halfway through 2016, which affects what can be modified.
How much does the Analog Man DS-1 Pro Midrange Mod cost?
As listed in Premier Guitar's review, the BOSS DS-1/Pro with the Midrange knob installed carried an MSRP of $130, while the modification alone on a pedal you send in was $90. These are the 2021 review figures; check current pricing with Analog Man before ordering.
What does the Midrange knob do?
The Midrange knob lets you shape the pedal's midrange frequencies, which the stock DS-1 tone control does not address directly. Premier Guitar's reviewer found it lets players dial in classic tube amp sounds or more modern, scooped tones, moving between vintage-sounding gain and modern metal voicings.
Which op-amp does the Analog Man DS-1 mod use?
According to Premier Guitar, Analog Man removes the DS-1's inline chip and replaces it with a JRC opamp chip. The stock DS-1's op-amp has changed several times over the years, with GuitarPCB noting all the factory op-amp changes were due to manufacturing stock and part obsolescence.
How does it differ from the Analog Man DS-1 Pro Mod?
The DS-1 Pro Mod replaces the stock components with high-grade audio parts and re-equalizes the pedal for a punchier sound. The Pro Midrange Mod does all of that and adds a Midrange knob, giving direct control over the mid frequencies. Oscar Jordan described the Midrange version as warmer than the DS-1 Pro Mod.
Sources (7)
- Analog Man DS-1 Pro Midrange Mod Review, Premier Guitar, 2008-09-09
- BOSS DS-1 Pro Midrange Mod review, Premier Guitar, 2008-10
- You're Using Your Boss DS-1 All Wrong! No Really, You Are, That Pedal Show (youtube.com), 2021-10-22
- In praise of: Boss DS-1 Distortion, MusicRadar, 2015-05-06
- Boss DS-1 Distortion Analysis, GuitarPCB
- Distortion! Boss DS-1 Waza vs Vintage DS-1 vs Standard DS-1 Vs JHS Angry Charlie & JAM Rattler, That Pedal Show (YouTube), 2022-10-28
- Analog Man Web Log, Analog Man (analogman.com), 2002-11




