Vera-Fi Audio LLC
Series One A40 Class A Amplifier
Series One A40 Class A Amplifier
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Product Description
Product Description
Coming Soon! - 40wpc Pure Class A!
Now available for pre-order with $500 placeholder. Remaining balance due on delivery.
This amp is the work product of Dr. Viet Nguyen (Lead Engineer), Jean-Paul Sweitzer, Darko Marinkovic and Anthony Tuttle – all under License from Hugh Dean, Aspen Amplifiers PLC.

Series One A40 Class A Amplifier Reviews on YouTube
a
TONEAudio
VERA-FI Audio A40 Class-A Solid State Power Amplifier. First Look!
XRK Audio
Vera-Fi Audio A40 Amp with Vanguard Speakers part 2
Articles about Series One A40 Class A Amplifier
diyAudio
Vera-Fi Audio A40 Amplifier Development and Updates on diyAudio Threads by Viet Nguyen
Tone Publications
The Vera-Fi A40 Power Amplifier – World’s 1st review!
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I bought these because I have been in love with Rosewood veneer since I first saw it as an extra cost option for some $5000 speakers in the '90s. Never expected to be able to afford a pair of Rosewood veneered speakers, but then found these for under $300. I pulled the trigger, ASAP.
When they arrived, I gave them >50 hours of 85dB in room playback of the radio with them facing each other under a comforter and wired out of phase to damp down the noise. After this, I gave them a listen. Beautiful, and they sound spectacular for their price point. I felt like I won the lottery; a scratcher, not the PowerBall, but still :) I was used to a bookshelf pair w/ lite mid-bass response and slightly "crisp" highs, and these (in direct comparison) had excellent mid-bass response and are just a bit laid-back in the very highest registers to my ears. I use them with a 500-watt RMS ported 12" subwoofer crossed over at 100Hz and get good output from them with an 80-watt per channel RMS amp. Like easy, no strain, >90dB at the listening position 12' away kind of "good output". For movies, tv, and music. Plenty for me.
If you like beautiful speakers, good sound (though not detail monsters like the AMT-tweeter based speakers I have in the bedroom), and spectacular value don't be afraid to pull the trigger on these Vanguard Scouts. Just please don't expect "giant killing" sound quality for under $300, and I promise you'll be happy with your purchase.
I’ve never had good speakers to listen to music on, so this was a big leap for me. I bought the Vera link combo and the 10” caldera to go with them. Mark has answered every question of mine personally and he advised that I connect the vera-link to the high pass input and then out put with some cables to the speaker and it works like a charm! Even though I am listening to music through my bluetooth on my iPhone, it sounds absolutely amazing!!
Excellent built quality, a ported sub that sounds closer to sealed sub and for only 348 euros? Insane but true, the Caldera 12 will sound just as good in my room for music or home theater, i cant recommend this sub enough! Go dual for bombastic room filling low notes imo. The only gripe i have is the auto on off which turns the sub off after only 10 seconds, i would recommend at least 1+ minute of inactivity to turn off so lets hope they boys in the lab will sort this out on the next batches! Excellent job Vera Fi team!
"First, I'd like to thank **Mr. Ace**. He was a great help with the delivery.
The **SnubWay - Noise Defender** has enhanced the audio system. A new level of sophistication has been added to the system, which was previously a straightforward 'Main Stream' setup.
Firstly, I feel like the **soundstage is wider**.
And I feel like it has captured the **subtle vibrations and noise**.
Frankly, I had been briefly tempted by Chinese-made products due to their price advantage.
However, **vera-fi-audiollc** clearly demonstrated the **technical gap** between those products and this one.
Thank you."
This is my first Hi-fi set of speakers I have ever bought. Before this, I listened to BOSE speakers.
WOW.... what an upgrade these Vanguard scout speakers are!!
I had to wait a couple months to get my order (because of tariffs), but Mark and his team were really amazing at answering all of my questions and updating me with the progress of my order.
I ordered the Caldera 10 sub, vera-link amps, and the scouts and Mark helped me to understand how to plug the vera-links bluetooth amps into the subwoofer through the high-pass input and output through the high-pass directly to the right scout speaker and it works like a charm! I couldn't be happier!
You will see two pics in my review of the back of the right vanguard scout speaker, because I wanted to show you that if you have to peel the velcro off of your speaker and place it elsewhere, it doesn't leave any residue to clean up! It's not a huge deal, but it certainly made my life easier.
I am a fan for life and will be ordering some of the new things they are working on in the future!
I purchased three Caldera 10's to go with my three pairs of Scouts. I love them, so I purchased 4 more to get small rooms 2.1 & large rooms a 2.2. I love speaker systems but I haven't had a good set up for years. I looked into this for months. I didn't know what my sound system was missing till I got the lower end filled in.
Great speakers, right in my budget. I purchased one pair, broke them in, loved them, and then purchased 2 more pairs. I had the option of ceiling speakers but bookshelf sound so much better. The Scouts allowed me to get great sound and budget. I have them in several rooms now. 2.2 in the main rooms and 2.1 in the small rooms. When connecting a Caldera 10 it was suggested to put a HPF 70h on the Scouts. I haven’t been able to find a good low cost 70h, closest so far is 80h $25. I purchased (3) pairs of Scouts and (7) Caldera 10. So HPF is important to focus more on the mid and high’s. Really really like Vera-Fi Scouts and Caldera’s!!!
Great product , great prices and good follow up when required.
Good price, looks great, well made -suits the scouts perfectly
I had my eyes on a Caldera 10 subwoofer for quite a while before I decided to take the plunge, but I'm really glad that I did. I initially had reservations for how low the price was for what it claimed it could do, but eventually a sale came along that was a little too good to resist and I purchased it for $149.
I imagine myself and quite a few other people ended up ordering around this time and it took some time before my order was fulfilled. Additionally, there were significant delays in shipments due in part to ongoing changes to US import policies, but Vera-Fi diligently kept me updated throughout the process, even responding to my emails I sent with questions. In hindsight, I am glad I was patient and waited to receive mine.
Though it took some time, in the end, I received a cute little compact subwoofer to pair with my budget living room setup and have been very pleased with how musical and quick it is, as well as how much it filled out and enriched the music for a pair of smaller bookshelf speakers. I don't think there is a better budget sub for a 2.1 stereo setup for this price. The Caldera 10 is a product that knows what it is and does it damn well.
Highly Recommended.