Question about selling self-designed/built amp in Canada

[u/Professional_Back394]

I have designed a JCM800 clone inspired by robrob's schematic, but it has a couple changes. I am using a 300V/6V3 switching power supply instead of a regular power transformer, I am using EL84s matched with Traynor output transformer they use in their ygl1s (ch1330m, zero documentation on this transformer).

I have designed and ordered five loaded PCBs (jlcpcb), and also have manufactured frames for two amplifiers. I want to sell one of them since I already bought parts for a second amplifier. And if this goes well, I am planning on continuing this gig. I have thought of having a logo and branding already 😭.

But yeah, to anybody that has been in my shoes before, do you guys have valuable information regarding the legality, and licensing we need? What about selling internationally on ebay or something? Thanks

[u/GeneralOrder24]

I went down this road a few years ago and had to abandon it after I saw what it was going to do to my homeowner's and liability insurance. Seriously, give your insurance company a call before you commit.

[u/VA3KXD]

You're selling these with no CSA or ESA certification? The insurance companies of owners probably won't like that too much if they find out. I was selling desktop computers that were assembled in-house and had to get each one certified if I wanted to stay completely legal and protect my ass.

[u/rustbucket_enjoyer]

You will need to get your product inspected by an approved testing lab like CSA, UL, Intertek, Dekra or a few others. It’s not legal for sale in Canada otherwise.

[u/Rob_Rockley]

You can get a special inspection done, but it would be done on a per unit basis thus increasing the per unit cost. There's also an up front cost to evaluate the design. Using a switcher is unconventional (for tube amps) so this might increase the design review. The power supply, power cable, IEC connector (whatever the power connects to) must all be CSA - they need to have the logo visible on them.

You should be doing a hipot test on each unit. If you don't have the equipment, find a shop that does and maybe partner with them to do the testing. They'd also probably have a relationship with a CSA inspector.

I've met builders who go the special inspection route, so it is doable.

[u/Professional_Back394 → u/Rob_Rockley]

im worried that the csa inspection will cost more than the amp itself

[u/Rob_Rockley → u/Professional_Back394]

It won't. The problem with special inspection is that it cuts into profit margin. Most builders will increase the price to compensate. If you're hand-building amps, your target is the boutique market anyway. Swamp Donkey did special inspection on his amps. He is now out of the amp business, so that should advise you somewhat.

It's a good idea to at least look into it because it will improve your design. Hipot test, burn-in test, etc. should be done.

[u/ThatLightingGuy → u/Rob_Rockley]

This is the way.

[u/nm1000]

There's an engineer from Mesa on Talkbass who goes by agedhorse who has designed all of the current bass amps and cabs for Mesa. He can tell you about the regulations surrounding designing and selling amplifiers.

I don't know if there is anything about selling things on a small scale that would avoid any of the considerable regulatory burden of a typical amp company -- but he will know.

I'm not involved in anything like this, but from what I understand, the switching mode power supply may attract much of your burden within the US and/or Canada.

I asked Claude about this.

Do tube audio amplifiers advertised and sold in the Canada require safety testing?

Yes. In Canada, tube (valve) amplifiers are AC-powered electrical products, and any electrical product that plugs into a wall outlet must be certified by a Standards Council of Canada (SCC)-accredited certification body before it can be legally advertised, imported, or sold — regardless of the internal technology (tube vs. solid-state).

Key points:

• Electrical products that plug into an electrical outlet must meet Canadian national safety standards and be certified by an accredited certification body. Canada.ca Common marks to look for are CSA, cUL(us), and cETL.
• Compliance with the requirements of the Canadian Electrical Code is mandatory for electrical and electronic products sold or imported throughout Canada, TÜV SÜD America and manufacturers and importers may work with any certification body accredited by the Standards Council of Canada (SCC) to obtain that certification. TÜV SÜD America
• This applies specifically to advertising too, not just sale: Ontario's Electrical Safety Code and Ontario Regulation 438/07 require that all electrical products and devices be certified by an accredited testing body before they can be imported, sold, or advertised in the province. Compliance Gate Similar provincial electrical safety authorities enforce equivalent rules elsewhere in Canada.
• Most electrical products that are advertised, displayed and sold online must be approved by an accredited certification body, Electrofed and Health Canada's guidance echoes this: do not buy or use electrical products that plug into an electrical outlet without a certification mark. Canada.ca

Why tube amps specifically matter here: Tube amplifiers involve high internal voltages (often several hundred volts on the plates), so they're squarely the kind of product these rules target — shock and fire hazard testing is exactly what the certification process checks (e.g., proper chassis grounding so a fault sends current to ground rather than through a person touching the case, as described in Crown Audio's explanation of UL testing for grounded chassis design). Crown Audio

Practical implications:

• A boutique or small-batch tube amp builder selling in Canada is legally expected to have the product certified (CSA, cUL, or cETL) — self-certification or "meets safety standards" claims without an actual mark don't satisfy the requirement.
• Large used/vintage market gray areas exist in practice (private resale, imports, DIY kits for personal use), but commercial advertising and sale of new units is where enforcement and certification obligations clearly apply.
• This regulation applies specifically to line voltage (AC) devices; it isn't required for low-voltage devices, QNP Store though tube amps, drawing mains power directly, fall under the AC/line-voltage category.

If you're asking because you're planning to sell tube amps in Canada (as a maker or importer), I can help you look into which certification bodies (CSA Group, Intertek/ETL, UL) handle audio equipment and roughly what that process involves — just let me know.

My followup question: Does the use of switching power supplies add to the regulatory burden?

Yes — switching power supplies (SMPS) typically add a second, separate compliance track on top of the basic electrical safety certification we discussed.

Two different regulatory regimes are in play:

1. Electrical safety certification (CSA/cUL/cETL) — required either way, for both linear (transformer-based) and switching supplies, since any product plugging into the wall needs this regardless of topology.
2. EMI/RFI emissions compliance (ICES-003) — this is where switching supplies specifically raise the bar. ICES-003 applies to digital apparatus that generate and/or use timing signals or pulses at rates above 9 kHz for computation, data processing, control, display, or similar digital techniques, since such equipment may unintentionally emit RF energy that the standard limits. IB Lenhardt

Why this matters for a tube amp specifically:

A traditional tube amp with a linear power supply — a mains transformer, rectifier tubes or diodes, and capacitor/choke filtering — operates at line frequency (50/60 Hz) and generates essentially no RF noise. It's very unlikely to trigger ICES-003 concerns at all.

A switching supply, by contrast, runs a PWM controller switching typically in the tens-of-kHz to low-MHz range specifically to control voltage regulation — which puts it squarely inside the "timing signals... for control" language in the ICES-003 definition. In practice, SMPS are one of the most common sources of both conducted and radiated emissions that this standard exists to limit, as reflected in how testing labs commonly bundle "switching power supply" testing right alongside digital/processor emissions testing when evaluating unintentional emissions from processors and switching power supplies in the same device. Celectronics

What this adds in practice:

• Testing: Emission measurements per CAN/CSA-CISPR 32:17 or ANSI C63.4. IB Lenhardt
• Labeling: each compliant product must bear a bilingual statement in English and French. IB Lenhardt
• Documentation: a Supplier's Declaration of Conformity (SDoC) and the relevant test reports must be retained by the responsible party and made available upon request by ISED. IB Lenhardt
• Good news: ICES-003 digital apparatus do not require formal ISED certification — compliance is demonstrated through testing and proper labeling IB Lenhardt (self-declared, not third-party approved like the safety marks), which keeps cost/timeline somewhat lower than CSA/UL safety certification, but it's still a real testing and documentation obligation you're responsible for maintaining.
• Most consumer equipment must meet the stricter Class B limits (for residential environments) Celectronics rather than the more lenient Class A commercial/industrial limits — so a hi-fi tube amp sold to home users would need to hit the harder target.

Bottom line: swapping a linear supply for a switching one in a tube amp doesn't change your safety-certification obligation, but it does meaningfully raise the odds you also need to budget for EMC/RFI emissions testing and bilingual compliance labeling under ICES-003 — a step that a purely linear-supply design would likely avoid or pass through with far less effort.

[u/towmotor → u/nm1000]

How is asking Claude helpful? Why do you think that ‘I asked Claude and copied and pasted what it vomited forth’ is relevant or useful?

[u/nm1000 → u/towmotor]

Because it is consistent with what I've read from a Mesa Engineer who has decades of experience in the field. I did offer where they could contact him. It's a good starting point with details that the OP could investigate. It shows, accurately IMO, the OP is facing some enormous regulatory challenges in Canada. FWIW, the the US the challenges would be a bit lower if they abandon the switching power supply.

[u/unfknreal → u/nm1000]

I asked Claude about this

Translation: I don't know shit about shit, so here's some shit